Skocz do pozycji: 1.

Tytuł:

Genetic variation and phylogenetic analysis of rabbit haemorrhagic disease virus (rhdv) strains

Autorzy:

Hukowska-Szematowicz, Beata
Tokarz-Deptuła, Beata
Deptuła, Wiesław

Powiązania:

https://bibliotekanauki.pl/articles/1039628.pdf

Data publikacji:

2012

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

genetic variation
RHD virus
phylogenetic analysis
genogroup

Opis:

Rabbit haemorrhagic disease virus (RHDV) belongs to the family Caliciviridae and is the etiological agent of the haemorrhagic disease, also known as rabbit plague. Its genome is a linear single-stranded (ss) RNA of 7437 nucleotides and the capsid is built from a single structural protein VP60. In connection with the discovery of new RHDV strains, there is a constant need to investigate the genetic variation of this virus and perform phylogenetic analyses which may show the evolutionary relationships among the RHDV strains. Studies on the divergence of RHDV have shown that it is genetically quite stable, although recent observations indicate that some new RHDV strains, significantly different from the original RHDV subtype and the new RHDVa subtype, are appearing. These latest findings suggest that a new group of RHDV strains has evolved. The present review summarizes the current knowledge on the genetic variation and the latest achievements in phylogenetic analyses of RHDV strains isolated in various countries.

Źródło:

Acta Biochimica Polonica; 2012, 59, 4; 459-465
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:

Diversity of Nicotiana species

Autorzy:

Depta, Anna
Doroszewska, Teresa

Powiązania:

https://bibliotekanauki.pl/articles/37242111.pdf

Data publikacji:

2023

Wydawca:

Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy

Tematy:

Nicotiana
tobacco
morphological diversity
genetic variation
collection

Opis:

The genus Nicotiana is one of the largest in the Solanaceae family and includes more than 80 species. The most well-known and widespread species of the genus Nicotiana is tobacco (Nicotiana tabacum), within which there are numerous cultivars. Tobacco is one of the most important industrial plants in Poland and worldwide. The great diversity within the genus makes it an excellent source of variation in a narrowing gene pool and can be used in breeding programmes. Studies of Nicotiana species also concern mechanisms of polyploidisation and evolution. There are also model species within the genus. However, in order to make full use of the collected germplasm resources, a detailed knowledge of the collection materials is necessary. While there are various reports in the international literature describing specific issues, the aim of this paper is to indicate the diversity of species in the genus Nicotiana as a whole on the basis of our own research and available studies. This review covers the characterisation of the genus Nicotiana in terms of origin and geographical distribution, as well as cytogenetic and molecular differences between species. An important aspect is the presentation of the morphological diversity of Nicotiana accessions and the variation in the most important tobacco alkaloids. A very important issue is the resistance of Nicotiana species to bacterial, fungal and viral diseases, which allows their use in resistance breeding.

Źródło:

Polish Journal of Agronomy; 2023, 52; 123-135
2081-2787

Pojawia się w:

Polish Journal of Agronomy

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:

Line × tester analysis in rapeseed: Identification of superior parents and combinations for seed yield and its components

Autorzy:

Rameeh, Valiollah

Powiązania:

https://bibliotekanauki.pl/articles/763895.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej

Tematy:

genetic variation
heritability
line × tester
seed yield

Opis:

This research was carried out to investigate the genetic structure of the 20 F1s rapeseed hybrids established from five female moderate maturity lines and four early maturity male testers, to determine parents showing general combining ability (GCA) and detect crosses showing specific combining ability (SCA). Significant variance of parents and crosses for all the traits indicated the existence of significant genetic variation among the parents and their F1 cross combinations. Significant variance of parents vs. crosses revealed significant average heterosis for all the traits except first pod height and seeds per pod. High narrow-sense heritability estimates for number of branches and pods length, indicate the importance of additive genetic effects for these traits. Hybrid performance was generally better than parental performance for all the traits except number of branches and also the genetic variation of lines × testers for all the traits were more than lines and testers. Most of the crosses with high mean value of pods per plant were yielded from the parental lines with high mean value of this trait. The crosses including L41×Foma2, Zafar×R42 and L22B×R38 with significant positive SCA effects of seed yield had also high mean values (3400, 3311.3 and 2904.2 kg ha-1 , respectively) of this trait.

Źródło:

Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia; 2015, 70, 2
2083-3563
0066-2232

Pojawia się w:

Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Growth and Yield Response of Field Pea (Pisum Sativum L.) to Gamma Irradiation Stress

Autorzy:

Majeed, Abdul
Muhammad, Zahir
Ullah, Rehman

Powiązania:

https://bibliotekanauki.pl/articles/2199667.pdf

Data publikacji:

2016-12-20

Wydawca:

Instytut Hodowli i Aklimatyzacji Roślin

Tematy:

Biotechnology
Genetic variation
Ionizing radiation
Legumes
Mutation

Opis:

Ionizing radiation has extensive applications in agriculture for inducing mutagenic changes in major field crops, potential breeding purposes, varietal development and crop improvement. This study was conducted to test the efficacy of 0.8, 1.6, 2.4 and 3.6 kGy gamma irradiation doses (Cobalt-60) upon growth and yield performance of edible pea (Pisum sativum L.) in pot culture experiment during 2009. Results demonstrated that higher radiation doses (1.6 and 3.2 kGy) significantly influenced the studied attributes of P. sativum. It was observed that 3.2 kGy had detrimental effects on shoot and pod lengths of pea which were reduced by 14.60 and 17.71 % respectively when compared to control. Differential response of the number of seeds pod-1, 1000 grain weight and dry biomass of pea were recorded at the applied doses. Significant reduction in number of seeds (-14.21 %) but increase in 1000 grain weight (+13.93 %) and dry biomass (+11.32 %) of pea were recorded at 1.6 kGy which revealed stimulatory effects on grain weight and dry biomass. Conversely, radiation dose 3.2 kGy was found detrimental to all the studied parameters except number of pods plant-1 and number of seeds pod-1 which were not affected.

Źródło:

Plant Breeding and Seed Science; 2016, 74; 27-35
1429-3862
2083-599X

Pojawia się w:

Plant Breeding and Seed Science

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

Are there any traces of Pinus uliginosa in the Stolowe Mountains Outside the Wielkie Torfowisko Batorowskie and Bledne Skaly?

Autorzy:

Boratynska, K.
Golab, Z.
Labiszak, B.
Niemczyk, W.
Sobierajska, K.I.
Ufnalski, K.
Wachowiak, W.
Boratynski, A.

Powiązania:

https://bibliotekanauki.pl/articles/2130273.pdf

Data publikacji:

2021

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

biostatistics
hybridization
genetic variation
morphological variation
Pinus mugo
Pinus uliginosa
Sudetes

Opis:

Pinus sylvestris (Scots pine) and taxa from the P. mugo (mountain pine) complex hybridize in contact zones producing morphologically-intermediate fertile hybrids. However, the hybrid specimens sometimes express only the P. sylvestris phenotype. Such cryptic hybrids were detected among P. sylvestris and P. uliginosa in the western part of Błędne Skały in the Stołowe Mountains, where the pines grow on the tops of sandstone rocks and phenotypically resemble P. sylvestris, P. uliginosa, and P. mugo. Hybrids with the P. sylvestris phenotype could be potentially present in other relic populations of this species in these mountains. During the present study, the hybrids were identified only in the area of Błędne Skały based on chloroplast and mitochondrial markers, morphological differentiation of various needle and cone traits, and phenotype assessments of the trees during sampling. these hybrids included three cryptic hybrids of P. sylvestris × P. mugo with the P. sylvestris phenotype and one displaying the phenotype of P. uliginosa. The other populations analyzed represented Scots pine with no evidence of hybridization with P. uliginosa and/or P. mugo. Biometric data on the cone and needle morphology also suggest possible hybridization within the P. mugo complex on Błędne Skały. The results indicate that hybridization takes place in this population but not in neighboring populations despite the possible connection by pollen-mediated gene flow.

Źródło:

Acta Societatis Botanicorum Poloniae; 2021, 90
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

Estimation of genetic variation of traits and physical properties of seeds for grass pea mutants [Lathyrus sativus L.]

Autorzy:

Rybinski, W.
Szot, B.
Pokora, L.

Powiązania:

https://bibliotekanauki.pl/articles/25857.pdf

Data publikacji:

2004

Wydawca:

Polska Akademia Nauk. Instytut Agrofizyki PAN

Tematy:

Lathyrus sativus
physical property
grass pea
mutant
genetic variation
seed

Źródło:

International Agrophysics; 2004, 18, 4
0236-8722

Pojawia się w:

International Agrophysics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Amphidiploid hybrids of Trifolium pratense L. [2n=14 and 2] with T.diffusum Ehrh. [2n=16]

Autorzy:

Strzyzewska, C

Powiązania:

https://bibliotekanauki.pl/articles/2048137.pdf

Data publikacji:

1995

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

chromosome
Trifolium diffusum
Trifolium pratense
hybrid
interspecific hybrid
plant breeding
genetic variation

Opis:

After duplicating the chromosome number by colchicine in sterile F₁ 16-chromosome hybrid T. pratense × T. diffusum some partially fertile plants with 32 chromosomes were found. Male fertility (viability of pollen grain) was from 69.3% to 86.2% (on average 81.8%), whereas female fertility estimated as seed setting after cross- and self-pollination was 21.8% and 6.9%, respectively. Male and female fertility as well as somatic chromosome number were examined in the F₂-F₄ generations. Selection for female fertility resulted in increasing seed setting in the first two generations (F₂ and F₃) and in decreasing it in F₄ generation. An average seed setting in the F₂-F₄ generations after cross-pollination amounted to 22.2%, 43.6% and 12.9%, respectively; after self-pollination it was 25.2%, 27.6% and 1.9%. In the F₂ generation all the plants had 2n=32 chromosomes. In the next generations there appeared aneuploids, among which 30-chromosome individuals were predominant.

Źródło:

Journal of Applied Genetics; 1995, 36, 2; 147-154
1234-1983

Pojawia się w:

Journal of Applied Genetics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

Genetic diversity and mating system of Scots pine plus trees

Autorzy:

Wasielewska, M
Klemm, M.
Burczyk, J.

Powiązania:

https://bibliotekanauki.pl/articles/41784.pdf

Data publikacji:

2005

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

Scotch pine
Pinus sylvestris
genetic diversity
mating system
genetic variation
plus tree
plant quality
tree

Opis:

We have investigated genetic diversity and the mating system of Scots pine plus trees from the Tuchola Forests – Poland, using allozymes as genetic markers. The studied plus trees possess high genetic diversity (expected heterozygosity He = 0.427) and low inbreeding (Wright’s index F = –0.028), which is comparable to Scots pine trees observed in other studies in natural populations and seed orchards. The mating system analyses revealed that almost all offspring produced by the plus trees were due to outcrossing (tm = 0.983), with no apparent bi-parental inbreeding. The estimate of correlation of paternity indicated that each of mother trees is pollinated on average by a relatively large number of effective males (Nep = 30.3). The observed genetic diversity and mating system patterns indicate that the seeds produced by the studied plus trees possess high genetic variation needed in reforestation processes.

Źródło:

Dendrobiology; 2005, 53; 57-62
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

Genetic variation of several bread wheat (Triticum aestivum L.) genotypes based on some morphological traits
Zróżnicowanie genetyczne kilku genotypów pszenicy zwyczajnej (Triticum aestivum L.) na podstawie niektórych cech morfologicznych

Autorzy:

Sabaghnia, N.
Janmohammadi, M.
Bashiri, A.
Asghari-Shirghan, R.

Powiązania:

https://bibliotekanauki.pl/articles/11236605.pdf

Data publikacji:

2014

Wydawca:

Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie

Tematy:

plant genetics
genetic variation
bread wheat
wheat
Triticum aestivum
genotype
morphological trait
genetic diversity
cluster analysis

Źródło:

Annales Universitatis Mariae Curie-Skłodowska. Sectio E. Agricultura; 2014, 69, 1; 44-54
0365-1118

Pojawia się w:

Annales Universitatis Mariae Curie-Skłodowska. Sectio E. Agricultura

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

Phylogenetic analysis and genetic structure of new isolates of Tomato mosaic virus in Iran

Autorzy:

Rakhshandehroo, F.
Hashemi, S.S.
Shahraeen, N.

Powiązania:

https://bibliotekanauki.pl/articles/961661.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

phylogenetic analysis
genetic structure
new isolate
tomato mosaic virus
genetic differentiation
genetic variation
phylogenetic tree
Tobamovirus
Iran

Opis:

The present report describes the new occurrence of Tomato mosaic virus (ToMV) in cabbage, bean and Malva neglecta plants in Iran. In this study, sequence analyses of a partial RNA dependent RNA polymerases (RdRp) and complete movement protein (MP) and the coat protein (CP) nucleotide sequences of three new ToMV isolates collected from major crop fields in Iran revealed low genetic variation of RdRp gene compared to the CP and MP genes. The different topologies of the phylogenetic trees constructed, using available open reading frame (ORF1), ORF2 and ORF3 sequences from ToMV isolates, indicated different evolutionary constraints in these genomic regions. Statistical analysis also revealed that with the exception of CP other tested ToMV genes were under negative selection and the RdRp gene was under the strongest constraints. According to the phylogenetic tree it can be inferred from the nucleotide sequences of the complete CP and MP genes, that isolates from Iran and Egypt formed separate groups, irrespective of host origin. However, isolates clustered into groups with correlation to geographic origin but not the host. Analysis of the Ks*, Z* and Snn values also indicated genetic differentiation between ToMV populations. The Tajima’s D, Fu and Li’s statistical values were significantly negative for the RdRp gene of the Asian population which suggests the sudden expansion of ToMV in Asia. Taken together, the results indicate that negative selection and genetic drift were important evolutionary factors driving the genetic diversification of ToMV.

Źródło:

Journal of Plant Protection Research; 2018, 58, 1
1427-4345

Pojawia się w:

Journal of Plant Protection Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

Genetic analysis of silver-fir populations in the Beskids

Autorzy:

Mejnartowicz, L

Powiązania:

https://bibliotekanauki.pl/articles/58866.pdf

Data publikacji:

2003

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

silver fir population
Abies alba
genetic distance
isoenzyme
Beskids Mountains
genetic structure
heterozygosity
genetic analysis
genetic diversity
population
genetic variation

Opis:

Twenty-eight isozymic loci were studied in the Beskid Mts., in four populations of common silver-fir (Abies alba): one in Beskid Makowski (BM) and three populations in Beskid Sądecki (BS). Their genetic variation and diversity were analyzed, and Nei's genetic distances between the populations were calculated. The results show that the geographical distance between the BM population and the three BS populations is reflected in genetic distances. The BM population is clearly distinct from the others. It has the lowest genetic diversity (I = 0.42), percentage of polymorphic loci (%PoL = 64.29) and number of rare alleles (NoRa = 5). Besides, the BM population has the highest observed heterozygosity (Ho = 0.291), which exceeds the expected heterozygosity (He = 0.254), estimated on the basis of the Hardy-Weinberg Principle. On the contrary, BS populations are in the state of equilibrium, which is manifested, in similar values of He = 0.262 and Ho = 0.264.

Źródło:

Acta Societatis Botanicorum Poloniae; 2003, 72, 2
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

Identification of the Polish strains of Chalara ovoidea using RAPD molekular markers

Autorzy:

Kraj, W
Kowalski, T.

Powiązania:

https://bibliotekanauki.pl/articles/58457.pdf

Data publikacji:

2005

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

Chalara ovoidea
Fagus sylvatica
beech tree
Polish strain
fungi
molecular marker
genetic variation
identification

Opis:

On the basis of morphological features and RAPD markers the strains of Chalara ovoidea found in Poland on planks and on stems of beech trees were identified. As reference strains the cultures taken from CBS Utrecht were employed; they were cultures CBS 354.76 and CBS 136.88. The amplification of genomic DNA was conducted using 10 primers (OPA01-OPA10), 7 of which (OPA01-OPA05, OPA09, OPA10) gave positive results. In total 42 fragment of DNA (bands) were obtained. In case of primers OPA03, OPA04, OPA05, and OPA09 all obtained fragments for analyzed strains were fully monomorphic. This means, that no genetic variability was found using the above mentioned primers. Low genetic variability was ascertained in the analysis of frequency of occurrence of DNA fragments using other primers, namely OPA01, OPA02, and OPA10. The matrix and dendrogram of genetic affinities among different strains of Chalara, calculated using the Jaccard’s similarity coefficient suggested, that the most similar strains are the ones coming from Poland (HMIPC 16136 and HMIPC16664) as well as the strain CBS 136.88, while somewhat different from them is the strain CBS 354.76. To determine, how exactly did the dendrogram reflect genetic affinity among analyzed strains, the Mantel’s test was employed. The correlation coefficient amounted to 0.78, suggesting that the strains under study had been grouped properly. The results showed, that the fungal strains found in southern Poland represent the species Chalara ovoidea.

Źródło:

Acta Societatis Botanicorum Poloniae; 2005, 74, 1
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:

Genetic variation in mutants of chilli (Capsicum annuum) revealed by RAPD marker

Autorzy:

Mullainathan, L.
Sridevi, A.
Umavathi, S.
Sanjai Gandhi, E.

Powiązania:

https://bibliotekanauki.pl/articles/11592.pdf

Data publikacji:

2014

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

genetic variation
mutant
chilli
Capsicum annuum
random amplified polymorphic DNA analysis
RAPD marker
spice

Opis:

The present study was under taken in order to analyze the chemical mutagenesis on Chilli germplasm. In this regard, K1 variety of chilli was subjected to different mutagenic concentration for inducing mutagenesis. The M3 plants exposed to EMS and DES to produce clear difference from the untreated control, thus indicating that mutagenic treatment produce polymorphic regions in the chilli. For extraction of genomic DNA was adopted an improved protocol of CTAB method with slight modification. A total of ten primers were used to screen the polymorphism among the treated populations line tall, tall with chlorophyll deficient, leaf, flower, GMS and DNA damages in maturity mutants were analyzed with control. Out of ten primers, four primers (PGF02, PGF03, PGF04 AND OP107) were successfully amplified in all the samples used for this study. The successful primers were amplified in to 93 products showing an average of 9.3 bands.

Źródło:

International Letters of Natural Sciences; 2014, 06
2300-9675

Pojawia się w:

International Letters of Natural Sciences

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:

Early evaluation of open pollinated offspring from Polish seedling seed orchards of Pinus sylvestris L.

Autorzy:

Rozkowski, R
Chalupka, W.
Misiorny, A.
Giertych, M.

Powiązania:

https://bibliotekanauki.pl/articles/41741.pdf

Data publikacji:

2007

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

Scotch pine
Pinus sylvestris
open-pollinated progeny
quantitative trait
genetic variation
genetic value
seedling
seed orchard
Polska

Opis:

Field trials with open-pollinated progeny of Scots pine were established in 2004 at five climatically different sites of the Polish lowlands. This long-term experiment was aimed to compare the genetic variation and genetic value of the offspring of twenty two seedling seed orchards and two second-generation seed orchard with the offspring of the local so-called economic seed stands, which are the main source of seeds for artificial regeneration of Scots pine in Poland. The early evaluation of quantitative traits of cones, seeds and 1-year-old seedlings attests to remarkable variation between the studied populations. Significant linear correlatios were found between some of the studied traits.

Źródło:

Dendrobiology; 2007, 57; 35-48
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Zróżnicowanie nagoziarnistych mutantów jęczmienia jarego (Hordeum vulgre L.) na poziomie fenotypowym i molekularnym
Variability of hull-less barley mutants (Hordeum vulgare L.) at the phenotypic and molecular levels

Autorzy:

Rybiński, Wojciech
Krystkowiak, Karolina
Kuczyńska, Anetta
Rębarz, Michał

Powiązania:

https://bibliotekanauki.pl/articles/41336613.pdf

Data publikacji:

2007

Wydawca:

Instytut Hodowli i Aklimatyzacji Roślin

Tematy:

jęczmień nieoplewiony
mutanty
zmienność genetyczna cech
podobieństwo genetyczne
RAPD
hull-less barley
genetic variation
genetic similarity
mutants

Opis:

Celem pracy było określenie zmienności genetycznej cech u uzyskanych mutantów w porównaniu do ich formy wyjściowej zarówno na poziomie fenotypowym jak i molekularnym. Materiał wyjściowy do badań stanowiły nagoziarniste mutanty jęczmienia jarego uzyskane na drodze sztucznego indukowania mutacji wykorzystując w tym celu ziarniaki nieoplewionej formy 1N/86. Czynnikiem mutagenicznym były chemomutageny a analizę cech fenotypowych i plonotwórczych u uzyskanych mutantów prowadzono na podstawie doświadczenia polowego. Zróżnicowanie genetyczne mutantów w porównaniu z ich formą wyjściową opracowano przy wykorzystaniu wielocechowych metod statystycznych oraz metod molekularnych. (reakcja RAPD-PCR). Analiza statystyczna wyników z doświadczenia polowego wykazała, że w porównaniu z formą wyjściową mutanty charakteryzowały się szerokim spektrum zmienności badanych cech. W badaniach molekularnych, na podstawie wartości podobieństwa genetycznego wyodrębniono mutanty o największym jak i najmniejszym podobieństwie genetycznym w porównaniu z ich formą wyjściową. Obliczone współczynniki podobieństwa genetycznego według Nei’a posłużyły do hierachicznego pogrupowania badanych obiektów. Wyniki pogrupowania przedstawiono w formie dendrogramu. W oparciu o wartości obliczonego dystansu fenotypowego (odległości Mahalonobisa) i genetycznego określono ich korelację a także wyróżniono mutanty o najmniejszym podobieństwie do swej formy wyjściowej na obu badanych poziomach zmienności.
The aim of the study was estimation of genetic variability in hull-less barley mutants as compared to their initial form at the phenotypic and molecular levels. Material for the performed studies constituted hull-less barley mutants obtained as a result of mutagenic treatment of grain of hull-less spring barley line — 1N/86. Two chemomutagens were the mutagenic agents. The phenotypic as well as yield structure traits of the mutants were analyzed on the ground of performed field trial. Genetic variations of the mutants, in comparison to their initial line, were elaborated with the use of multivariate statistics methods and the RAPD molecular method. Statistical analysis of the obtained results indicated that the mutants were characterized by broad spectrum of variation, as compared to the initial line. On ground of the molecular study, the calculated genetic similarity coefficients allowed to select the mutants with the greatest and smallest genetic similarity to the initial line. Genetic similarity was estimated according to the formula given by Nei and the results were used for hierarchical grouping of the analyzed mutants. A result of the grouping was presented on the dendrogram. With the use of calculated phenotypic and genetic distances their correlation coefficient was estimated. As final results, the mutants were chosen with the lowest similarity to the initial line, on the both analyzed levels (phenotypic and molecular).

Źródło:

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin; 2007, 245; 113-127
0373-7837
2657-8913

Pojawia się w:

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 16.

Tytuł:

Differentation of Scots pine (Pinus sylvestris L.) seed orchard in Gidyle on basin of morphological needles trains

Autorzy:

Słonimska-Walkowiak, Renata
Krzakowa, Maria

Powiązania:

https://bibliotekanauki.pl/articles/1386046.pdf

Data publikacji:

2016

Wydawca:

Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego

Tematy:

Pinus sylvestris L.
seed orchard
needles
needles variation
genetic variation
zmienność igieł
igły
plantacja nasienna
zmienność genetyczna

Opis:

The subject of this study was to analyse the variation of Scots pine (Pinus sylvestris L.) seed orchard with regard to a complex of 9 morpho-anatomical traits of needles. The following measurements were carried out: needle length, number of resin canals, thickness of needle epidermis on adaxial side, mean width of needle epidermis cells on adaxial side, needle cross-section width, needle cross-section thickness, ratio of needle cross-section height to its cross-section width, or the. ratio of traits 6 to 5, distance of vascular bundles (in μm), Marcet’s coefficient, i.e. cross-section width x distance of vascular bundles divided by cross-section thickness, or trait 5 x trait 8 divided by trait 6. The intra-population variation of 150 Scots pine (Pinus sylvestris L.) clones form a seed orchard in Giedyle, Orneta Forest District in the Regional Directorate of State Forests in Olsztyn, was examined. The applied complex of traits was evaluated using a test of discriminatory power and the characterisations of traits and coefficients of correlation between them were calculated, as well as the degree of participation of particular traits in the construction of canonical values was assessed. The data being obtained from biometrical examination were the basis to perform statistical analyses: multivariate analysis of variance together with testing of statistical hypotheses and canonical variate analysis. The Mahalanobis distance between the trees was set and, based on their shortest values, a dendrite was constructed. With the method of agglomerative clustering, which is based on the nearest neighbourhood, the population homogeneity was examined. The Marcet’s coefficient and the distance between vascular bundles were found to be the traits which differentiate the population under stud y the best.
Przedmiotem badań była analiza zmienności plantacji nasiennej sosny zwyczajnej (Pinus sylvestris L.) pod względem kompleksu dziewięciu cech morfo-anatomicznych igieł. Przeprowadzono następujące pomiary: długość szpilki, liczba kanałów żywicznych, grubość epidermy po stronie płaskiej igły, średnia szerokość trzech komórek epidermy po stronie płaskiej igły, szerokość przekroju poprzecznego igły, grubość przekroju poprzecznego igły, stosunek wysokość przekroju poprzecznego igły do szerokości przekroju poprzecznego czyli stosunek cechy 6 do 5, odległość wiązek przewodzących (w mm), wskaźnik Marceta tj. szerokość przekroju x odległość wiązek przewodzących podzielona przez grubość przekroju poprzecznego czyli cecha 5 x cecha 8 podzielona przez cechę 6. Zbadano wewnątrzpopulacyjną zmienność 150 klonów sosny zwyczajnej Pinus sylvstris L. z plantacji nasiennej w Giedylach, Nadleśnictwo Orneta na terenie RDLP Olsztyn. Zastosowany zespół cech oceniono testem mocy dyskryminacyjnej, obliczono charakterystyki cech, współczynniki korelacji między nimi oraz oceniono stopień udziału poszczególnych cech w konstrukcji zmiennych kanonicznych. Uzyskane w wyniku opracowania biometrycznego dane stanowiły podstawę do wykonania analiz statystycznych: wielozmiennej analizy wariancji wraz z testowaniem hipotez statystycznych i analizy zmiennych kanonicznych. Wyznaczono odległości Mahalanobisa między drzewami, a na podstawie ich najkrótszych wartości skonstruowano dendryt. Metodą grupowania aglomeratywnego, opartego na najbliższym sąsiedztwie, zbadano jednorodność populacji. Stwierdzono, że cechami, które najlepiej różnicują badaną plantację są: wskaźnik Marceta oraz odległości między wiązkami przewodzącymi.

Źródło:

Acta Biologica; 2016, 23; 101-115
2450-8330
2353-3013

Pojawia się w:

Acta Biologica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 17.

Tytuł:

Genetic variation and population structure of three Trifolium species

Autorzy:

Bulinska-Radomska, Z

Powiązania:

https://bibliotekanauki.pl/articles/2047280.pdf

Data publikacji:

1996

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Trifolium montanum
enzyme
population structure
Trifolium fragiferum
Trifolium campestre
polymorphic locus
Trifolium
genetic variation

Opis:

Three diploid Trifolium (Fabaceae) species, T. campestre, T.fragiferum and T. montanum, were electrophoretically assayed to elucidate the range and organization of genetic variation in relation to the mating system, reproduction mode and longevity of the species. T. campestre is an annual self-pollinated species. T.fragiferum and T. montanum are cross-pollinated perennials. The former species reproduces both sexually and vegetatively, whereas the latter relies solely on sexual reproduction. Several populations of each species collected throughout Poland were surveyed for 15 enzymes. The measures of variation included: proportion of polymorphic loci per population, average number of alleles per locus, average gene diversity (He) and genetic distance (D). To describe the organization of diversity in each species, total genetic variation per locus (Ht) was calculated and partitioned into intra-(Hs) and inter-(Dst) populational components. Both cross-pollinated species had more polymorphic loci, higher numbers of alleles per locus and higher level of diversity than self-pollinated T. campestre. Most of genetic variation of the latter species was allocated among populations unlike in T.fragiferum and T. montanum.

Źródło:

Journal of Applied Genetics; 1996, 37, 2; 153-160
1234-1983

Pojawia się w:

Journal of Applied Genetics

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 18.

Tytuł:

Genetic evaluation of seeds of highly endangered Pinus uliginosa Neumann from Wegliniec Reserve for ex-situ conservation program

Autorzy:

Lewandowski, A
Burczyk, J.
Wachowiak, W.
Boratynski, A.
Prus-Glowacki, W.

Powiązania:

https://bibliotekanauki.pl/articles/57105.pdf

Data publikacji:

2005

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

mating system
conservation
hybridization
Wegliniec Reserve
peat bog pine
Pinus uliginosa
conservation programme
genetic variation

Opis:

Peat-bog pine Pinus uliginosa Neumann has become extinct or rare in many parts of Europe. We have investigated the levels of genetic variation and inbreeding in seeds collected from a highly endangered reserve of this species in Poland, using allozymes as genetic markers. Generally, a high level of genetic variation was observed. The mean expected heterozygosity was 0.376, while average (Na) and effective (Ne) numbers of alleles per locus were 2.45 and 1.67, respectively. Nevertheless, we have detected relatively low levels of outcrossing, and potential biparental inbreeding. The population-wide multilocus outcrossing rate was estimated to be 0.706 (±0.091), while the minimum variance mean of single-locus estimates was distinctly lower (ts=0.611). The estimates of outcrossing calculated for individual trees ranged widely from 0.051 to 1.017, indicating the complexity of outcrossing patterns. The investigated population of P. uliginasa from Węgliniec is small and surrounded by extensive forest stands of P. sylvestris. Our three-year records of phenological observations demonstrated that flowering periods for P. uliginosa and P. sylvestris overlap, allowing for cross-pollination. The possibility of P. uliginosa pollination by P. sylvestris creates a potential danger of genetic erosion of the P. uliginosa gene pool. Nonetheless, based on a species specific cpDNA marker we have found that among 533 seedlings of P. uliginosa there were only six seedlings carrying cpDNA marker specific for P. sylvestris, indicating that such hybridization seems to be rare.

Źródło:

Acta Societatis Botanicorum Poloniae; 2005, 74, 3
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 19.

Tytuł:

„Verification concepts of the presence of main forest-forming tree species ranges in Poland - scientific seminar in Forest Research Institute

Autorzy:

Sulkowska, M.

Powiązania:

https://bibliotekanauki.pl/articles/38549.pdf

Data publikacji:

2013

Wydawca:

Instytut Badawczy Leśnictwa

Tematy:

forest
tree species
species range
Polska
climate
paleobotany
genetic variation
scientific seminar
Forest Research Institute

Źródło:

Folia Forestalia Polonica. Series A . Forestry; 2013, 55, 1
0071-6677

Pojawia się w:

Folia Forestalia Polonica. Series A . Forestry

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 20.

Tytuł:

Flowering of Picea abies (L.) Karst. clones of Istebna origin in the Kórnik seed orchard

Autorzy:

Chalupka, W
Rozkowski, R.

Powiązania:

https://bibliotekanauki.pl/articles/41272.pdf

Data publikacji:

2004

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

Norway spruce
Picea abies
clone
flowering
graft mortality
genetic variation
seed orchard
forest tree species

Opis:

The flowering and graft mortality of Norway spruce clones of Istebna origin was only slightly different from clones of other origin in the same seed orchard. The negative effect ofmoving Istebna clones from the south to the north of their origin was probably compensated by moving them from a higher altitude to lowland. There is a danger that the complete loss of several clones, observed in the seed orchard with time,may really decrease the expected level of genetic variation in the progeny. It is recommended that the mortality of grafts and the reduction in the number of clones in the seed orchard should be under permanent observation.

Źródło:

Dendrobiology; 2004, 51 Supplement
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 21.

Tytuł:

Molecular study of Prussian carp – an invasive species in the lakes of the Leszno Lakeland

Autorzy:

Panicz, Remigiusz
Keszka, Sławomir
Rybczyk, Agnieszka
Zawal, Andrzej

Powiązania:

https://bibliotekanauki.pl/articles/1386039.pdf

Data publikacji:

2016

Wydawca:

Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego

Tematy:

Prussian carp
hotspot
invasive species
genetic variation
karaś srebrzysty
hot spot
gatunki inwazyjne
zróżnicowanie genetyczne

Opis:

Invasions of alien species are a serious problem worldwide. In Poland, among of 30 alien species recorded in aquatic environment Prussian carp (Carassius gibelio) draw increasing attention due to its exceptionally successful colonization. Therefore the aim of the work was to perform study on Prussian carp populations, including genetic testing, which may answer questions regarding the degree of variation and the reasons for success in new locations. The material for the study consisted of fin clips from 120 specimens of the species Prussian carp collected from five lakes in the Leszno Lakeland. Genetic variation within and between groups was analysed based on sequence analysis of control region (D-loop, mtDNA). Genetic analyses revealed variability in sequence length (Indel 353A), where in the group of sequences from Lakes Wonieść and Łoniewskie there was one sequence variant, with 555 base pairs, but from Lakes Osłonińsko-Górskie, Dominickie and Wielkie, consisted of variants of 554 (30%)and 555 (70%) base pairs. Presented work indicate that presence and spread of alien species may be used as an indicator of worsening environmental conditions, therefore analysed areas should be given special attention in the process of restoration to their original state.
Inwazje gatunków obcych są ważnym problemem globalnym. Przykładowo oprócz 30 obcych gatunków ryb odnotowanych w polskich wodach, szczególną uwagę przyciąga karaś srebrzysty (Carassius gibelio) w związku z jego wyjątkowo ekspansywną strategią rozprzestrzeniania. Z tego też powodu celem niniejszego artykułu jest analiza populacji karasia srebrzystego, w tym testów genetycznych, które mogą udzielić odpowiedzi na pytanie o stopniu zróżnicowania i przyczynach sukcesu obserwowanych w kolejnych lokalizacjach. Materiał do badań stanowiły skrawki płetw 120 osobników karasia srebrzystego, które odłowiono w latach 2009i 2010 z pięciu jezior należących do obszaru Pojezierza Leszczyńskiego. Analizy genetyczne w obrębie jak i pomiędzy grupami przeprowadzono na podstawie amplifikacji oraz analizy odczytanej sekwencji regionu kontrolnego (D-loop, mtDNA). Analiza uzyskanych sekwencji ujawniła, że różnią się one długością (Indel 353A). W grupie sekwencji z jezior Wonieść oraz Łoniewskie występował jedynie jeden wariant sekwencji, 555 par zasad. Pozostałe sekwencje uzyskane na bazie prób pozyskanych z jezior Osłonińsko-Górskie, Dominickie oraz Wielkie składały się z wariantów o długości 554 (30%) i 555 (70%) par zasad. Wyniki badań dowodzą, że obecność oraz rozprzestrzenianie się obcych gatunków może wskazywać na pogarszający się stan środowiska wodnego, dlatego rozpatrywane akweny należy traktować indywidualnie podczas prób przywracania ich do stanu pierwotnego.

Źródło:

Acta Biologica; 2016, 23; 47-54
2450-8330
2353-3013

Pojawia się w:

Acta Biologica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 22.

Tytuł:

Genetic variation of the relict and endangered population of Chamaedaphne calyculata (Ericaceae) in Poland

Autorzy:

Szczecinska, M
Sawicki, J.
Wasowicz, K.
Holdynski, C.

Powiązania:

https://bibliotekanauki.pl/articles/41179.pdf

Data publikacji:

2009

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

plant species
rare species
Polska
endangered population
relict population
genetic variation
Chamaedaphne calyculata
Ericaceae
genetic diversity
conservation
geographic distribution

Opis:

Chamaedaphne calyculata is rare and endangerded species of Polish flora. The genetic variation within and among ten polish population of leatherleaf was analysed by ISSR and ISJ markers. The analysis revealed a total of 160loci with an average of 13.3 bands per primer. We expected a low level of genetic diversity of this narrowly distributed species in Poland, but our results indicate that Ch. calyculata revealed a high level of genetic diversity at species level (P=88.7%of polymorphic loci, AE=1.468, HE=0.290). At the population level, the variation of Ch. calyculata was significantly lower (P=27.6%, AE=1.140, HE=0.098). There was significant correlation between ecological properties (population size; number of flowering ramets) and genetic diversity parameters. Analysis of molecular variance showed that most of variation (62%) in Ch. calyculata occurred among population. Gene flow (Nm) between the ten studied populations, determined based on the GST index, was very low at 0.239. It indicated that the fragmentation and isolation of populations might result from specific evolutionary history of this plant and postglacial recolonization

Źródło:

Dendrobiology; 2009, 62; 23-33
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 23.

Tytuł:

Simulation study on the application of Gibbs sampling for major gene detection in a population of laying hens

Autorzy:

Szydlowski, M
Szwaczkowski, T.

Powiązania:

https://bibliotekanauki.pl/articles/2044229.pdf

Data publikacji:

1998

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

segregation analysis
hen
egg production
laying hen
major gene
detection
genetic variation
Gibbs sampling
animal model

Opis:

A method for the detection of segregating major genes based on the analysis of estimated marginal posterior major gene variance density was examined. The properties of the method were investigated using data sets simulated for a real population of laying hens consisting of eleven generations. Marginal posterior densities of model parameters were estimated by the Gibbs sampling approach proposed by Janss et al. (1995). With the data of about 4000 observations it was possible to detect a major gene responsible for one third of the genetic variance and one tenth of the phenotypic variance, irrespectively of the degree of dominance at the major locus. The inference based on the posterior marginal major gene variance can be sensitive to skewness of the data. It was shown that skewness of 0.2 can lead to a false detection of a major gene. The method is robust against a non-genetic mixture of normal distributions.

Źródło:

Journal of Applied Genetics; 1998, 39, 4; 321-330
1234-1983

Pojawia się w:

Journal of Applied Genetics

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 24.

Tytuł:

Water use efficiency and response to nutrient shortage in mature plants of Aegilops and Triticum species
Efektywność wykorzystania wody i reakcja na niedobór składników pokarmowych u roślin gatunków Aegilops i Triticum w stadium dojrzałości

Autorzy:

Gorny, A.G.
Garczynski, S.

Powiązania:

https://bibliotekanauki.pl/articles/801811.pdf

Data publikacji:

2002

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie

Tematy:

water use efficiency
response
nutrient shortage
mature plant
Aegilops
Triticum
plant species
genetic variation
stress tolerance

Opis:

A factorial experiment was performed to evaluate whether wild and primitive Aegilops and Triticum species may be used in wheat breeding as donors of an improved water use efficiency (WUE) and/or tolerance to nutrient shortage. Seventeen lines representative for Aegilops and Triticum species of different origin, ploidy level and genomic structure were compared with three local cultivars of hexaploid wheat T. aestivum. The genotypes were grown till maturity in experimental pots (9 dm3) under high and reduced NPK nutrition. There was a broad genetic variation in the response to nutrient shortage and efficiency of water use in the vegetative and grain mass formation. The variation was dependent upon species, ploidy level and genome present. Results suggest that a search for enhanced tolerance and novel variation in WUE among wild or primitive wheats may be essential for wheat breeders. The tetraploids T. carthlicum, T. dicoccoid.es and T. timopheevii and the hexaploid T. sphaerococcum were found to be the most promising potential sources of stress tolerance. However, only the primitive T. sphaerococcum appeared to be a valuable donor of improved WUE. Despite a high operative heritability of WUE, testing till plant maturity over diverse levels of soil nutrient status would rather be necessary for a precise discrimination of the most efficient genotypes as indicated by the genotype-stage and genotype-nutrition interactions.
Przeprowadzono doświadczenie wazonowe w celu określenia czy dzikie i prymitywne gatunki Aegilops i Triticum mogą być wykorzystane w hodowli pszenicy jako donory efektywniejszego wykorzystania wody (WUE) i/lub tolerancji na niedobór składników pokarmowych. Siedemnaście linii reprezentujących gatunki Aegilops i Triticum o różnym pochodzeniu, ploidalności i strukturze genomowej porównano z trzema krajowymi odmianami pszenicy heksaploidalnej T. aestivum. Genotypy rosły do stadium dojrzałości w wazonach doświadczalnych (9 dm3) przy wysokim i obniżonym nawożeniu NPK. Obserwowano szeroką zmienność genetyczną w reakcji na obniżone nawożenie i efektywności wykorzystania wody w tworzeniu masy wegetatywnej i plonu ziarna. Zmienność ta była zależna od gatunku, poziomu ploidalności i obecności danego genomu. Wyniki sugerują, że poszukiwanie zwiększonej tolerancji i nowej zmienności w WUE wśród dzikich i prymitywnych pszenic dla celów hodowlanych jest uzasadnione. Tetraploidalne T. carthlicum, T. dicoccoides i T. timopheevii oraz hexaploidna Т. sphaerococcum były potencjalnie najlepszymi źródłami tolerancji stresu. Jednak tylko prymitywna T. sphaerococcum okazała się cennym źródłem zwiększonej WUE. Obserwowane interakcje typu genotyp-stadium i genotyp-nawożenie wskazują, że pomimo wysokiej odziedziczalności WUE, dla precyzyjnego doboru najefektywniejszych genotypów raczej niezbędne będzie testowanie roślin uprawianych aż do stadium dojrzałości przy odmiennych poziomach żyzności gleby.

Źródło:

Zeszyty Problemowe Postępów Nauk Rolniczych; 2002, 481, 1
0084-5477

Pojawia się w:

Zeszyty Problemowe Postępów Nauk Rolniczych

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 25.

Tytuł:

Cochlearia polonica Frohl. (Brassicaceae), a narrow endemic species of southern Poland: history of conservation efforts, overview of current population resources and genetic structure of populations

Autorzy:

Cieslak, E.
Kazmierczakowa, R.
Ronikier, M.

Powiązania:

https://bibliotekanauki.pl/articles/56510.pdf

Data publikacji:

2010

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

Cochlearia polonica
Brassicaceae
endemic species
Southern Poland
history
conservation effort
current population
population resource
genetic structure
genetic variation
population structure

Opis:

Cochlearia polonica Fröhl. (Brassicaceae) is one of the rarest species in the Polish and European flora and a taxon endemic to a very small area in southern Poland. Due to industrial activities and subsequent transformation of habitats it was extinct in all natural localities around 1994. The persistence of the species was ensured thanks to the active protection efforts including a series of transplantations based on the material from the last and decreasing natural population. The history of conservation efforts of C. polonica provides a model example of successful active protection in the European flora. Here, we provide a complete review comprising the following aims: (i) outline of the discovery and taxonomic conceptions on C. polonica, (ii) review of conservation efforts aimed at preserving its populations, (iii) description of the existing population resources, and (iv) analysis of the genetic structure of all existing populations based on previously published data and new, supplementary results.

Źródło:

Acta Societatis Botanicorum Poloniae; 2010, 79, 3
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

A pot evaluation of the sensitivity of spring barley [Hordeum vulgare L.] to water stress applied at different growth stages

Autorzy:

Martyniak, L

Powiązania:

https://bibliotekanauki.pl/articles/2041977.pdf

Data publikacji:

2001

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

pot
Polska
barley
drought sensitivity
spring barley
sensitivity
growth stage
Hordeum vulgare
water stress
genetic variation

Źródło:

Journal of Applied Genetics; 2001, 42, 2; 145-151
1234-1983

Pojawia się w:

Journal of Applied Genetics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

Seed microstructure and genetic variation of characters in selected grass-pea mutants [Lathyrus sativus L.]

Autorzy:

Rybinski, W.
Blaszczak, W.
Fornal, J.

Powiązania:

https://bibliotekanauki.pl/articles/25396.pdf

Data publikacji:

2006

Wydawca:

Polska Akademia Nauk. Instytut Agrofizyki PAN

Tematy:

microstructure
seed microstructure
plant property
Lathyrus sativus
selected mutant
grass pea
mutant
chemomutagenesis
seed
genetic variation

Źródło:

International Agrophysics; 2006, 20, 4
0236-8722

Pojawia się w:

International Agrophysics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

Human genome sequenced: achievements and shortcomings in big science

Autorzy:

Blin, N

Powiązania:

https://bibliotekanauki.pl/articles/2041227.pdf

Data publikacji:

2001

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

science
worm
molecular genetics
fly
euchromatic genome
genome evolution
Drosophila
nucleotide
DNA
Caenorhabditis
human genome
genetic variation

Źródło:

Journal of Applied Genetics; 2001, 42, 4; 399-403
1234-1983

Pojawia się w:

Journal of Applied Genetics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

Tytuł:

Molecular variation of Antarctic grass Deschampsia antarctica Desv. from King George Island [Antarctica]

Autorzy:

Chwedorzewska, K J
Bednarek, P.T.
Puchalski, J.

Powiązania:

https://bibliotekanauki.pl/articles/56633.pdf

Data publikacji:

2004

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

moisture
Antarctic
Deschampsia antarctica
soil
morphology
nutrition condition
environment condition
grass
genetic variation
plant
King George Island

Opis:

Deschampsia antarctica Desv. plants collected on King George Islands (Antarctica) at two localities that differ in topographic and nutrition conditions exhibited morphological variation that differentiated plants of both locations. The molecular variation characteristic to individuals of both sites was tested using AFLP approach in order to verify whether morphological variation characteristic to the plants resulted from environmental factors or possibly from differences at the DNA level. Four primer pair combinations were used to generate 339 AFLP fragments, 132 of which were polymorphic and allowed evaluation of genetic relationships among D. antarctica individuals. Chi-square test revealed that only 12 signals were discriminative for the plants from both locations. Cluster analysis conducted on these AFLP fragments demonstrated that plants from the location rich in biogenes were more polymorphic than those from poor one. Our data suggest that the phenotypic variation specific to plants of both locations seem to be the result of adaptation to the environmental conditions like soil and moisture rather than reflect genetic differences.

Źródło:

Acta Societatis Botanicorum Poloniae; 2004, 73, 1
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

Assessment of winter oilseed rape DH lines using uni- and multivariate methods of quantitative genetics and mathematical methods

Autorzy:

Szala, L.
Kaczmarek, Z.
Adamska, E.
Cegielska-Taras, E.

Powiązania:

https://bibliotekanauki.pl/articles/81281.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

winter oilseed rape
Brassica napus
doubled haploid
androgenesis
multivariate method
transgression
genetic variation
quantitative genetics
mathematical method

Źródło:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2015, 96, 2
0860-7796

Pojawia się w:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Natural hybridization between Elymus repens and Elymus hispidus assessed by AFLP analysis

Autorzy:

Szczepaniak, M
Cieslak, E.
Bednarek, P.T.

Powiązania:

https://bibliotekanauki.pl/articles/58862.pdf

Data publikacji:

2007

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

pollen fertility
Polska
hybridization
hybrid
botany
flora
new species
Elymus x mucronatus
Elymus hispidus
Elymus repens
genetic variation

Opis:

Hybrid speciation within the genus Elymus is analyzed and discussed. The supposed hybrid origin of Elymus x mucronatus between Elymus repens and Elymus hispidus was tested. In this aim, pollen viability and AFLP variation of putative progenitors and progenies from two natural populations were studied. Pollen fertility of hybrids ranging from 0 to 91.95% (average 59.50%) indicates the occurrence of F1 hybrids and backcross hybrids. Seven EcoRI/MseI AFLP primer combinations generated a total of 477 AFLP fragments (300 polymorphic) for 48 parental and hybrid individuals. UPGMA and principal coordinates analysis of the AFLP data set show that hybrids are closer to E. hispidus than to E. repens and suggest unidirectional introgression towards E. hispidus. AFLP fragments of the hybrid taxon were additively inherited from the parental species and no hybrid-specific bands were identified. AFLP analysis validates the hybrid status of E. ×mucronatus. Populations in which E. repens, E. hispidus and their hybrids co-occur still progress from early hybridization stages of F1 hybrids to an advanced hybridization stage of a well-established hybrid swarm. E. ×mucronatus is potentially self-sustaining by predominant vegetative reproduction by rhizomes and partial fertility leading to the development of mature seeds. We propose to consider Elymus ×mucronatus as a new species of hybrid origin in the Polish flora.

Źródło:

Acta Societatis Botanicorum Poloniae; 2007, 76, 3
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

Low level of genetic variation within Melica transsilvanica populations from the Krakow-Czestochowa Upland and the Pieniny Mts revealed by AFLPs analysis

Autorzy:

Szczepaniak, M
Cieslak, E.

Powiązania:

https://bibliotekanauki.pl/articles/58779.pdf

Data publikacji:

2007

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

low level
genetic variation
Melica transsilvanica
plant population
Krakow-Czestochowa Upland
Pieniny Mountains
AFLP technique
Melica ciliata
genetic diversity
habitat fragmentation

Opis:

Fragmented distribution, the breeding system and effects of genetic drift in small-size populations occurring at edge of the species range play an important role in shaping genetic diversity of such a species. Melica transsilvanica is a plant rare in the flora of Poland, where it reaches the northern limit of its continuous range. Amplified Fragment Length Polymorphism (AFLP) DNA profiling method was applied to measure genetic diversity among and within populations of M. transsilvanica. Additionally, genetic relationships between M. transsilvanica and Melica ciliata, two closely related species, were explored. A total of 68 plants from 7 populations of M. transsilvanica and 24 plants from 2 populations of M. ciliata, collected in Poland and outside it, were analyzed. Using 294 AFLP fragments from 3 primer combinations, accessions were grouped into two major clusters associating with M. ciliata and M. transsilvanica, respectively. Further, two subclusters, corresponding to the samples collected from the Pieniny Mts and from the Kraków - Częstochowa Upland were clearly distinguished within the M. transsilvanica group. The hierarchical AMOVA exhibited significant genetic distinction between these geographic regions (60.89%, p < 0.001). The obtained results showed that the most genetic diversity resided between the populations of M. transsilvanica (86.03%) while considerably lower genetic variation was found within the populations (13.97%), which is consistent with the results reported for self-plants. The low level of AFLP genetic variation of M. transsilvanica can be caused by the geographic isolation of populations, which preserves the dominant self-mating breeding system of the species. Individual populations of M. transsilvanica are characterized by isolated gene pools differing by a small number of loci.

Źródło:

Acta Societatis Botanicorum Poloniae; 2007, 76, 4; 321-331
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Zróżnicowanie ekotypowe populacji buka zwyczajnego (Fagus sylvatica L.) w Polsce
Ecotype differentiation of European beech [Fagus sylvatica L.] populations in Poland

Autorzy:

Sułkowska, M.

Powiązania:

https://bibliotekanauki.pl/articles/1019503.pdf

Data publikacji:

2006

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

buk zwyczajny
proweniencje
Polska
ekotypy
lesnictwo
Fagus sylvatica
drzewa lesne
fagus sylvatica
provenance test
genetic variation
izoenzyme analysis

Opis:

The aim of the study was to estimate the ecotype diversity of Fagus sylvatica L. in the context of the genetic variation within the natural range of its distribution in Poland. The study covered 13 beech provenances from the selected seed stand. Additionally, 13 natural beech populations were subjected to analysis with special consideration taken of the diversity of this species in the forest complexes of the Bieszczady region. The high inter−population variation was proved by way of natural selection processes depending on site−climate conditions. The results point out to the need of selection of provenances to match the individual environmental conditions.

Źródło:

Sylwan; 2006, 150, 07; 38-50
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

Spatial structure of a natural mixed topodeme of subalpine Sorbus taxa

Autorzy:

Gomory, D
Krajmerova, D.

Powiązania:

https://bibliotekanauki.pl/articles/59154.pdf

Data publikacji:

2008

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

spatial structure
genetic variation
Sorbus
subalpine plant
apomixis
microsatellite
dispersal
hybrid
Sorbus chamaemespilus
Sorbus aria
Sorbus aucuparia
reproductive system

Opis:

Spatial distribution and genetic variation of a population of Sorbus chamaemespilus (L.) Crantz and putative hybrids between S. chamaemespilus, S. aria and S. aucuparia growing in the nature reserve Skalnä Alpa (central Slovakia) were studied. The analysis of spatial patterns using Ripley's K-function revealed a significant clustering of the adults of both S. chamaemespilus and hybrid taxa at distances up to ~15 m and a strong affinity between both taxonomical groups, indicating similar ecological requirements. Bivariate point-pattern analysis considering cardinal direction showed that juvenile individuals of S. chamaemespilus are clustered around the adults up to the distance of ~2 m, whereas in hybrid taxa with larger and more dense crowns, juveniles are clustered at distances more than ~3 m from the adults. The analysis of genetic variation in a subset of adult shrubs using 4 nuclear microsatellite loci revealed that unlike expected, there was no variation in S. chamaemespilus but several genotypes were found in the group of hybrid taxa. Implications for the reproduction system and conservation of the investigated taxa are discussed.

Źródło:

Acta Societatis Botanicorum Poloniae; 2008, 77, 4; 305-311
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

Zróżnicowanie cech morfologicznych i plonotwórczych u indukowanych mutantów odmian lędźwianu siewnego (Lathyrus sativus L.)
Variability of morphological and yield-contributing traits of grasspea (Lathyrus sativus L.) mutants

Autorzy:

Rybiński, Wojciech
Bocianowski, Jan
Pankiewicz, Katarzyna

Powiązania:

https://bibliotekanauki.pl/articles/41487284.pdf

Data publikacji:

2008

Wydawca:

Instytut Hodowli i Aklimatyzacji Roślin

Tematy:

doświadczenia polowe
lędźwian siewny
mutanty
struktura plonowania
zmienność genetyczna cech
field trials
genetic variation
grasspea
mutants
yield-contributing traits

Opis:

Oprócz niewątpliwych zalet lędźwianu siewnego jak jego znaczna tolerancja na stresy abiotyczne, szereg niekorzystnych cech użytkowych limituje jego szerszy udział w krajowym rolnictwie. Stąd konieczne jest genetyczne ulepszenie tego gatunku a mutageneza może być wartościowym uzupełnieniem konwencjonalnych metod hodowlanych i zostać wykorzystana do tworzenia dodatkowej zmienności genetycznej. Materiał do badań stanowiły mutanty lędźwianu siewnego uzyskane z nasion z dwóch krajowych odmian Derek i Krab poddawanych działaniu chemomutagenów. W latach 2004–2006 w doświadczeniach polowych oceniano zmienność wybranych cech morfologicznych i plonotwórczych u dziewiętnastu mutantów pochodzących z odmiany Krab oraz dziewięciu z odmiany Derek. Wyniki opracowano wykorzystując wielocechową analizę statystyczną. Uzyskane wyniki wskazują na zróżnicowanie cech mutantów w porównaniu z ich formami wyjściowymi Krab i Derek, przy czym lata badań (z których dwa charakteryzowały się suszą w okresie wegetacji), istotnie wpływały na zakres analizowanej zmienności. Dla badanych lat łącznie największe wartości współczynnika zmienności uzyskano dla terminu kwitnienia, wysokości roślin, liczby strąków z rośliny oraz liczby i masy nasion z rośliny, a najniższe dla długości i szerokości strąka oraz liczby nasion w strąku. Wartości kontrastu w porównaniach odmian z ich mutantami łącznie dla poszczególnych cech były najczęściej dodatnie, wskazując na niższe wartości badanych cech u mutantów, aczkolwiek dla niektórych mutantów wartości cech struktury plonu były wyższe niż u ich formy wyjściowej, zwłaszcza w latach suchych 2005 i 2006. Na podstawie analizy zmiennych kanonicznych wyróżniono mutanty, które pod względem kompleksu badanych cech wykazywały najmniejszy stopień podobieństwa w porównaniu z ich odmianami wyjściowymi oraz w porównaniach mutantów między sobą. Mutanty te, zwłaszcza o szerszej reakcji na stres wodny stanowić mogą interesujący materiał wyjściowy do dalszych prac hodowlanych.
Apart from many advantageous features, such as high tolerance to abiotic stresses, grasspea is characterized by a few undesirable traits that limit its broader use in Polish agriculture. Genetic improvement of this crop with mutation breeding can be a valuable supplement to conventional plant breeding methods to create additional genetic variability that may be utilized by plant breeders. The present studies deal with grasspea mutants obtained from seeds of two Polish cultivars Derek and Krab treated with different doses of chemomutagens. Nineteen mutants derived from the cultivar Krab and nine mutants from the cultivar Derek were studied in a field trial conducted in 2004-2006 at the Experiment Station of Polish Academy of Sciences in Cerekwica. The variability of morphological and yield-contributing traits of the mutants and the initial cultivars were estimated for each year, and the results obtained were analyzed with multivariate statistics. The results indicate that the mutants’ traits differed from their initial cultivars. In 2005 and 2006 drought occurred, which might have influenced the results. Among the traits studied for three years the highest coefficient of variation was observed for time to flowering, plant height, pod number per plant, seed number per plant, seed weight per plant; the lowest for pod length and width and seed number per pod. The values of the contrasts for the comparisons of the cultivars with their mutants for particular traits were generally positive. This indicates that for three years studied together, the cultivars had higher values of the corresponding traits than their mutants. In spite of this negative trend, a few mutants exceeded their initial cultivars for yield-contributing traits, which was particularly visible in both dry years 2005 and 2006. Canonical variety analysis was a useful statistical tool for clear identification of multivariate genetic variation of grasspea mutants. The analyses performed allowed to distinguish these mutants that highly differed from their initial cultivars and the other mutants. Such mutants, particularly those with a broad reaction to water stress, could constitute an interesting initial material for further breeding.

Źródło:

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin; 2008, 249; 217-231
0373-7837
2657-8913

Pojawia się w:

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 36.

Tytuł:

Struktura klonalna wiązu polnego (Ulmus minor Mill.) w Polsce
Clonal structure of field elm (Ulmus minor Mill.) in Poland

Autorzy:

Chudzińska, M.
Litkowiec, M.
Pałucka, M.
Pasławska, A.
Lewandowski, A.
Kozioł, C.

Powiązania:

https://bibliotekanauki.pl/articles/979539.pdf

Data publikacji:

2019

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

lesnictwo
dendrologia
drzewa lesne
wiaz polny
Ulmus minor
zmiennosc genetyczna
markery genetyczne
markery mikrosatelitarne
clonality
field elm
genetic conservation
genetic variation
microsatellite markers

Opis:

Field elm (Ulmus minor Mill.) is distributed mainly across central and southern Europe. In Poland this species occurs in the lowlands and foothills, where it grows mainly in the floodplain forests along the rivers. U. minor exists in a variety of climatic and ecological conditions. It is capable to tolerate floods as well as drought. Currently, most populations of U. minor are small and fragmented resulting from human activity and Dutch elm disease. Moreover, in the natural field elm populations, vegetative propagation by root suckers or sprouting can be observed. All these factors may affect the level of genetic variation of U. minor populations in Poland. In the present study, we determined the level of genetic variation and the clonal diversity of twelve natural U. minor populations in Poland (407 individuals) using eight nuclear microsatellite loci. The obtained results indicate that the studied field elm populations are characterized by low level of genetic variation (He=0.382; Ho=0.555; A=7.0). Additionally, the high level of clonality in field elm populations was estimated. The clonality level of examined elm populations varied among them, and in some cases was very high. Out of the 407 individuals analysed for clonal structure only 61 multilocus genotypes were identified. Furthermore, only one genotype was identified in the three study populations of field elm, which means that in each of these populations all trees belong to one genet. The values of genotypic richness (R) were heterogeneous among populations, with mean 0.148. The knowledge on the genetic diversity and the clonal structure of U. minor populations is essential to make future decisions regarding conservation of genetic resources of this species in Poland.

Źródło:

Sylwan; 2019, 163, 10; 839-845
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 37.

Tytuł:

Genetic variation of F1 hybrids from controlled crosses between Pinus montana var.rostrata and Pinus sylvestris in morphological needle traits

Autorzy:

Bobowicz, M A
Stephan, B.R.
Prus-Glowacki, W.

Powiązania:

https://bibliotekanauki.pl/articles/2041217.pdf

Data publikacji:

2001

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

F1 hybrid
multivariate analysis
Pinus sylvestris
genetics
needle
hybridization
hybrid
cross
morphology
Pinus mugo
Pinus montana
genetic variation

Źródło:

Journal of Applied Genetics; 2001, 42, 4; 449-466
1234-1983

Pojawia się w:

Journal of Applied Genetics

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 38.

Tytuł:

Genetic variation in the mitochondrial cytochrome c oxidase subunit 1 (cox1) gene of Enterobius vermicularis (Nematoda) in Poland: a preliminary study

Autorzy:

Kubiak, K.
Paukszto, L.

Powiązania:

https://bibliotekanauki.pl/articles/6116.pdf

Data publikacji:

2016

Wydawca:

Polskie Towarzystwo Parazytologiczne

Tematy:

genetic variation
mitochondrial cytochrome c
cytochrome C oxidase subunit 1
Enterobius vermicularis
Nematoda
parasite
intestinal parasite
human parasite
Polska

Źródło:

Annals of Parasitology; 2016, 62, Suppl.
0043-5163

Pojawia się w:

Annals of Parasitology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 39.

Tytuł:

Znaczenie zmienności genetycznej dla ochrony zasobów genowych cisa pospolitego w Europie
Importance of genetic variation for conservation of English yew genetic resources in Europe

Autorzy:

Litkowiec, M.
Plitta, B.P.
Lewandowski, A.

Powiązania:

https://bibliotekanauki.pl/articles/991598.pdf

Data publikacji:

2013

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

lesnictwo
drzewa lesne
cis pospolity
Taxus baccata
zasoby genowe
zmiennosc genetyczna
ochrona zasobow genowych
genetic variation
genetic conservation
ex situ
in situ
english yew

Opis:

The genetic variation is considered to be a key factor for long−term survival of the species. The recognition of the existing genetic diversity is the preliminary phase in development of an effective strategy for conservation of forest tree species gene pools. Taxus baccata L. with a wide but scattered distribution in Europe is an example of rare and endangered species that needs both ex situ and in situ protection. The increase in fragmentation and isolation of populations and reduction in effective population size can cause erosion of the gene pool through increased genetic drift, increased inbreeding, reduced gene flow and decreased migration rate. As a result, local populations may be responsible for the loss of genetic variation, hence a decrease in their viability and adaptability. A few genetic analyses based on isozymes and DNA markers indicate that the yew, both in Poland and in other regions of Europe, is characterized by high levels of genetic variation within populations and moderate genetic differentiation between populations.

Źródło:

Sylwan; 2013, 157, 10; 754-760
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 40.

Tytuł:

Genetic variation within and among naturally regenerating populations of alder [Alnus glutinosa]

Autorzy:

Mejnartowicz, L

Powiązania:

https://bibliotekanauki.pl/articles/56806.pdf

Data publikacji:

2008

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

rare allele
genetic distance
isoenzyme
Alnus incana
genetic diversity
European black alder
gene flow
beside grey alder
naturally regenerating population
heterozygosity
botany
alder
genetic variation
Alnus glutinosa

Opis:

To assess the inter- and intrapopulation genetic variation in the filial generation (F1) of alder (Alnus glutinosa (L.) Gaertn.), 11 naturally regenerated populations were analysed. Their parental populations (P), represent the whole Polish territory and belong to three phytosociological associations with alder: typical alder swamp forest Carici elongatae-Alnetum (Ce-A); alder riparian forest Circaeo-Alnetum (C-A); and ash-elm riparian forest Fraxino-Ulmetum (F-U). F1 populations are grown in a common-garden experiment (provenance trial). Genotyping of individual trees has been carried out by analysis in a bud tissue allele frequency in the 21 isozyme putative loci of 10 enzymes. Differences between populations in respect to the level of genetic diversity were not high. Genetic diversity measured as the number of effective alleles per locus was the highest (Ne = 1.65) in population Wińsko originating from F-U (where also the inbreeding coefficient was the highest, F = 0.429), and the lowest (Ne = 1.48) in population Sławki from Ce-A. In all investigated populations, observed heterozygosity (Ho = 20%) was lower than expected from H-W equilibrium (He = 29%). The highest genetic variation expressed as percentage of polymorphic loci (77.3%) was observed in the offspring populations from Ce-A, and the smallest (69.9%) in the populations originating from F-U. It seems that the low genetic differentiation between populations is probably connected with long-distance seed dispersal via river systems. Alder seed can be transported over long distances thanks to periodical flooding. There is some gene flow between alder populations, with about 2.5 immigrants successfully entering a population per generation (Nm = 2.55). The level of population subdivision within A. glutinosa was low (Fst = 0.089). There was no significant genetic differentiation between populations from different phytosociological associations. Mantel test exhibited no significant correlation (r = 0.077) between genetic and geographic distance. In the dendrogram constructed according to Nei (1972) on the basis of interpopulation genetic distances, many small groups can be observed.

Źródło:

Acta Societatis Botanicorum Poloniae; 2008, 77, 2
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 41.

Tytuł:

ROZWÓJ TECHNOLOGII GENETYCZNYCH A OCHRONA PRAWNA GENOMU LUDZKIEGO

Autorzy:

Szczepaniec, Maria

Powiązania:

https://bibliotekanauki.pl/articles/663943.pdf

Data publikacji:

2018

Wydawca:

Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie

Tematy:

Te genome
the embryo
genetic research
heritable genetic variation
development of genetic technologies
human genome protection.
Genom
embrion
badania genetyczne
dziedziczne zmiany genetyczne
rozwój technologii genetycznych
ochrona prawna genomu.

Opis:

This article discusses the provisions for the legal protection of the human genome at the embryonic stage. I examine both the Polish and international regulations. I also look at the threats resulting from the development of genetic technologies and the need to introduce appropriate legal regulations for effective protection of the human being at the embryonic stage.
W artykule podjęta została próba analizy regulacji dotyczących prawnej ochrony ludzkiego genomu na etapie embrionalnym. Analiza objęła zarówno unormowania krajowe, jak i międzynarodowe. Wskazane zostały również zagrożenia wynikające z rozwoju technologii genetycznych oraz związana z tym potrzeba wprowadzenia stosownych regulacji prawnych, pozwalających na zapewnienie skutecznej ochrony istocie ludzkiej na etapie embrionalnym

Źródło:

Zeszyty Prawnicze; 2018, 18, 4
2353-8139

Pojawia się w:

Zeszyty Prawnicze

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 42.

Tytuł:

Weed infestation of a winter wheat canopy under the conditions of application of different herbicide doses and foliar fertilization
Zachwaszczenie łanu pszenicy ozimej w warunkach stosowania zróżnicowanych dawek herbicydów oraz nawożenia dolistnego

Autorzy:

Kraska, P.
Okon, S.
Palys, E.

Powiązania:

https://bibliotekanauki.pl/articles/27330.pdf

Data publikacji:

2009

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

weed infestation
winter wheat
wheat
canopy
plant condition
application
herbicide dose
foliar fertilization
DNA analysis
genetic variation
random amplified polymorphic DNA

Opis:

The present study was carried out in the years 2006– 2008 in the Bezek Experimental Farm (University of Life Sciences, Lublin). A two-factor field experiment was set up according to a randomized block design, in three replications. The experimental field was situated on medium heavy mixed rendzina developed from chalk rock with medium dusty loam granulometric composition. The soil was characterised by neutral pH, a very high content of P (342.1) and K (278.9) along with a very low level of magnesium (16.0 mg kg-1 of soil) and organic carbon (over 3.5%). The aim of this research was to compare the effect of three herbicide doses and two foliar fertilizers applied in a winter wheat canopy on weed infestation. The herbicides Mustang 306 SE 0.4 l ha-1 and Attribut 70 WG 60 g ha-1 were applied at full recommended doses as well as at doses reduced to 75% and 50%. Foliar fertilizers Insol 3 (1 1 ha-1) and FoliCare (20 kg ha-1) were applied at full recommended doses twice in the growing season BBCH* development stage 23-25* and 33-35*). The control was not treated with the herbicides and foliar fertilizers. The weed infestation level was determined by means of the quantitative gravimetric method at two dates: the first one 6 weeks after herbicide application and the second one – before harvest. The number of weed individuals was counted; species composition and air-dry biomass of aboveground parts were estimated from randomly selected areas of 1 m 0.25 m at four sites on each plot. Galium aparine and Apera spica-venti plants were sampled for molecular analysis 6 weeks after herbicide application (the treatments with the full herbicide dose, a 50% dose and the control without herbicides). The density of weeds and weed air-dry weight were statistically analysed by means of variance analysis, and the mean values were estimated with Tukey’s confidence intervals (p=0.05). It was found that the number of weeds and air-dry weight of weeds in the control treatment were significantly higher in comparison with the herbicide treated plots. The application of different herbicide doses did not differentiate significantly the weed infestation level in the winter wheat canopy. Galium aparine, Papaver rhoeas, Viola arvensis and Apera spica-ventiwere dominant weed species in the winter wheat canopy. Foliar application of fertilizers did not influence the weed infestation level in the crop canopy. Molecular analysis showed that herbicide application did not affect genetic variation in the populations of Galium aparine and Apera spica-venti.
Badania przeprowadzono w latach 2006-2008 w Gospodarstwie Doświadczalnym Bezek niedaleko Chełma. W dwuczynnikowym doświadczeniu przeprowadzonym w układzie bloków losowanych porównywano działanie trzech dawek herbicydów oraz dwóch nawozów dolistnych w łanie pszenicy ozimej odmiany Turnia uprawianej w monokulturze. Herbicydy były stosowane w pełnych zalecanych dawkach, zredukowanych do 75% i do 50%. Nawozy dolistne Insol 3 (N-11,5%; Mg-2,84%; B-0,28%; Cu-0,56%; Fe-1,20%; Mn-1,68%; Mo-0,01%; Zn-1,12%) i FoliCare (N-18,0%; P-18,1%; K-18,0%; Mg-1,5%; S-7,2%; B-0,02%; Cu-0,10%; Fe-0,20%; Mn-0,10; Mo-0,01%; Zn-0,02%) stosowano dwukrotnie w okresie wegetacji. Kontrolę stanowiły poletka na których nie stosowano zarówno herbicydów jak i nawozów dolistnych. W pracy oceniono poziom zachwaszczenia łanu (liczba osobników, skład gatunkowy i powietrznie sucha masa) pszenicy ozimej w 6 tygodni po zastosowaniu herbicydów Mustang 306 SE (florasulam – 6,25gl-1; 2,4-D EHE – 300gl-1) i Attribut 70 WG (70% propoksykarbazonu sodowego) oraz przed zbiorem. Jednocześnie podjęto próbę sprawdzenia czy wielkość dawki herbicydu może wpływać na zmiany DNA gatunków dominujących w łanie pszenicy ozimej – Galium aparine i Apera spica-venti. Poziom zachwaszczenia łanu pszenicy ozimej mierzony zarówno liczbą chwastów, jak i powietrznie suchą masą nie był istotnie różnicowany przez zastosowane dawki herbicydów. Uzyskane wyniki wskazują na możliwość obniżenia dawek herbicydów w łanie pszenicy ozimej bez ryzyka wzrostu poziomu zachwaszczenia. Nawożenie dolistne nie zmieniało poziomu zachwaszczenia łanu. Gatunkami dominującymi w łanie pszenicy ozimej w 6 tygodni po zastosowaniu herbicydów oraz przed zbiorem były Galium aparine, Papaver rhoeas oraz Viola arvensis, natomiast z jednoliściennych Apera spica-venti. Analiza molekularna nie wykazała, aby zastosowane dawki herbicydów wpłynęły na zróżnicowanie genetyczne Galium aparine i Apera spica-venti.

Źródło:

Acta Agrobotanica; 2009, 62, 2
0065-0951
2300-357X

Pojawia się w:

Acta Agrobotanica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 43.

Tytuł:

Molecular characterization of Iranian black cumin (Nigella sativa L.) accessions using RAPD marker

Autorzy:

Neghab, M.G.
Panahi, B.

Powiązania:

https://bibliotekanauki.pl/articles/81098.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

black cumin
Nigella sativa
Iranian black cumin
Ranunculaceae
flowering plant
RAPD marker
genetic variation
polymorphism
UPGMA method
clustering algorithm
cluster analysis

Źródło:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2017, 98, 2
0860-7796

Pojawia się w:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 44.

Tytuł:

Selection of optimal spawner-pairs based on the polymorphism of microsatellite loci in a partially-tetraploid fish species (Coregonus lavaretus)

Autorzy:

Kaczmarczyk, D.
Fopp-Bayat, D.
Wiśniewska, A.

Powiązania:

https://bibliotekanauki.pl/articles/363102.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet Warmińsko-Mazurski w Olsztynie

Tematy:

assemblage of spawning pairs
conservation genetics
endangered species
genetic variation
microsatellite loci
whitefish
genetyka konserwacyjna
gatunek zagrożony
sieja
zmienność genetyczna
mikrosatelitarne loci

Opis:

Many species that are in danger of extinction require human support in the form of captive-breeding programs to help maintain their populations in the wild.When breeding in captivity, it is important to select breeding pairs that will create the most genetically diverse progeny. Based on the polymorphism of their microsatellite loci, breeding pairs of diploid land animals have been successfully selected. In this theoretical paper, we asked how to adapt this technique to the selection of spawner pairs for restocking populations of partially tetraploid fish species. To test our calculation techniques, we used actual data on the polymorphism of the loci of captured whitefish (Coregonus lavaretus). The data enabled calculations showing which spawner pairs would create the most genetically diverse cohort of offspring if they were bred. Themethod presented in the paper can be used for breeding fish in aquaculture conditions to help conserve species.

Źródło:

Environmental Biotechnology; 2015, 11, 1; 20-25
1734-4964

Pojawia się w:

Environmental Biotechnology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 45.

Tytuł:

Use of random amplified polymorphic DNA [RAPD] assay for differentiation among isolates of Stagonospora spp. and Septoria tritici

Autorzy:

Czembor, P C
Arseniuk, E

Powiązania:

https://bibliotekanauki.pl/articles/2047271.pdf

Data publikacji:

1996

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Stagonospora
Stagonospora avenae
Septoria tritici
random amplified polymorphic DNA
pathogen
polymerase chain reaction
DNA
molecular marker
fungal isolate
Stagonospora nodorum
genetic variation

Opis:

The genetic similarity of three species: Septoria tritici, Stagonospora nodorum and Stagonospora avenae f. sp. triticea - important pathogens in many cereal production areas worldwide was assessed by random amplified polymorphic DNA (RAPD) assay. In preliminary research DNA of 14, 9, and 7 monopyenidios- pore isolates of S. nodorum, S. tritici, and S. a. tritícea, respectively, were amplified by PCR with four primers. Afterwards the research was focused on three mono- pyenidiospore isolates from each species studied. The isolates of each species selected for the study varied in pathogenicity and were diverse geographically. PCR with the set of 14 selected primers resulted in 99 different bands, ranged from 180 to 2500 base pairs in length. Most primers in PCR (especially RAD11, RAD31, RAD32, RAD33) revealed uniform bands for isolates of S. a. tritícea, that allow to identify this species among the others. The cluster analysis using Unweighed Pair-Group Method with Averaging (UPGMA) revealed interspecies disagreement among the isolates ranging from 32 to 53%. The intraspecies disagreement ranges were 17-20%, 38-43%, 42-44% for S. avenae f. sp. triticea, S. nodorum and S. tritici, respectively. Cluster analysis classified isolates into three homogeneous clusters. Each cluster grouped isolates of one species according to their current taxonomie ranks based on spore size, colony morphology and host ranges. In addition, two of the clusters represented by isolates of S. nodorum and S. a. tritícea were distinctly separated at a lower linkage distance from the third one comprising isolates of S. tritici. A slight inconsistency found in grouping some isolates indicates that such groupings should be done with caution. The present study indicates that the PCR- RAPD assay is of a potential use in taxonomy of Stagonospora spp. and Septoria tritici as well as in molecular identification of casual disease agents.

Źródło:

Journal of Applied Genetics; 1996, 37, 3; 239-251
1234-1983

Pojawia się w:

Journal of Applied Genetics

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 46.

Tytuł:

Genetic variation of Picea abies in southern Germany as determined using isozyme and STS markers

Autorzy:

Konnert, M

Powiązania:

https://bibliotekanauki.pl/articles/40969.pdf

Data publikacji:

2009

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

international conference
Europe
forest ecosystem
plant breeding
tree
Norway spruce
Picea abies
genetic variation
Germany
isoenzyme
Bavaria
DNA marker
plant genetics
provenance

Opis:

Over 50 populations of Norway spruce from Bavaria were analysed at 23 isozyme gene loci. The mean genetic distances between these populations were quite small. A geographical grouping could not be observed, and discrimination between provenances from high and low altitudes was not identifiable using this marker type, either. The only difference between spruce populations from South Bavaria and those from Northeast Bavaria is in the presence of some distinct rare alleles. The highest values for the genetic diversity were detected for spruce stands in Northeast Bavaria (Frankonian Forest). Using STS markers, further genes of the nuclear genome of Picea abies can be dealt with. The genetic differences found on the basis of ten STS markers between different Picea abies seed lots and/or seedling populations are generally 2-3 times greater than those found by means of isozyme gene markers. DNA markers turned out to be an appropriate and substantial addition or even more a suitable alternative to isozyme markers for analysing genetic variation and testing provenance identity. Their advantages consist in a markedly wider variation as well as in the enlarged genome segments investigated.

Źródło:

Dendrobiology; 2009, 61 Supplement
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 47.

Tytuł:

Polimorfizm izoenzymowy świerka pospolitego z wybranych regionów Krutzscha testowanych w doświadczeniu IPTNS-IUFRO 1964/68 w Krynicy
Isoenzyme polymorphism in progenies of Norway spruce from selected Krutzsch regions of IPTNS-IUFRO 1964/68 provenance test in Krynica

Autorzy:

Masternak, K.
Sabor, J.

Powiązania:

https://bibliotekanauki.pl/articles/993950.pdf

Data publikacji:

2013

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

lesnictwo
hodowla lasu
drzewa lesne
swierk pospolity
Picea abies
zmiennosc genetyczna
izoenzymy
polimorfizm
markery izoenzymatyczne
doswiadczenia proweniencyjne
IUFRO
picea abies
isozyme
genetic variation

Opis:

The genetic variation of Norway spruce provenances from fourteen geographical regions were tested in the IPTNS−IUFRO 1964/68 experiment in Krynica. The genetic structure of seven isozyme systems coded by eleven loci was described. Parameters of genetic polymorphism i.e. the average number of alleles per locus and observed heterozygosity were 1.47 and 0.12, respectively. The spruces from Belarus were characterised by the highest genetic diversity, while the provenances from south−eastern Styria – the lowest. The values of Wright's inbreeding coefficient varied from –0.417 for the Romanian provenances to 0.223 for the provenances from 28 th Krutzsch regions (Tyrol−Salzburg; Austria).

Źródło:

Sylwan; 2013, 157, 01; 47-53
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 48.

Tytuł:

Zastosowanie n-wymiarowej macierzy kropkowej do analizy zmienności genetycznej roślin
Application of n-dimensional dot-matrix to analysis of plant genetic diversity

Autorzy:

Kasperski, Andrzej
Kasperska, Renata

Powiązania:

https://bibliotekanauki.pl/articles/2198760.pdf

Data publikacji:

2015-06-30

Wydawca:

Instytut Hodowli i Aklimatyzacji Roślin

Tematy:

n-wymiarowa macierz kropkowa
statystyczna ocena przyrównań
transwersja
tranzycja
zmienność genetyczna
n-dimensional dot-matrix
statistical evaluation of alignments
transversion
transition
genetic variation

Opis:

Celem pracy jest przedstawienie możliwości wykorzystania nowej metody do analizy zmienności genetycznej organizmów, w tym organizmów o znaczeniu przemysłowym. Zaproponowana metoda działa na dwóch poziomach — na poziomie porównań aminokwasów oraz na poziomie porównań ich kodonów, tj. na poziomie kodu genetycznego. W pracy przedstawiono analizę inhibitorów proteinaz z nasion dyniowatych oraz analizę cytochromu c wybranych roślin uprawnych. Ponadto, za pomocą nowej metody dwupoziomowej analizy zmienności genetycznej otrzymano wyniki, które wykorzystano do interpretacji drzew filogenetycznych zbudowanych dla analizowanych sekwencji.
The aim of this study is to present the possibilities of using a new method for genetic variability analysis of organisms, including organisms of industrial use. The proposed method works at two levels — at the amino-acid comparison level and at the amino-acid codon comparison level, i.e. at the genetic code level. The paper presents analysis of proteinase inhibitors from squash seeds and analysis of cytochrome c of selected crops. Moreover, the results obtained using the new method of genetic variability two-level analysis, have been used to interpret the phylogenetic trees constructed for the analyzed sequences.

Źródło:

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin; 2015, 276; 69-83
0373-7837
2657-8913

Pojawia się w:

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 49.

Tytuł:

Polodowcowa historia jodły pospolitej (Abies alba Mill.) w Polsce jako efekt migracji z różnych ostoi plejstoceńskich - dotychczasowy stan wiedzy
Postglacial history of silver fir (Abies alba Mill.) in Poland as a result of migration from different refugia - the current state of knowledge

Autorzy:

Litkowiec, M.
Lewandowski, A.

Powiązania:

https://bibliotekanauki.pl/articles/973534.pdf

Data publikacji:

2015

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

Abies alba
okres polodowcowy
zasieg wystepowania
leśnictwo
drzewa leśne
jodła pospolita
populacje roślin
zasięg występowania
zmienność genetyczna
ochrona zasobów genowych
genetic variation
genetic conservation
postglacial history
Albies alba Mill.

Opis:

The paper reviews the current knowledge about the genetic variation, glacial and postglacial history of Polish populations of silver fir (Abies alba Mill.). This species occurs in the mountainous forests of central and southern Europe, from the Pyrenees up to the Balkans, where it is important from both ecological and economical points of view. The current knowledge about glacial and postglacial history of fir has been obtained from palynological and genetic studies. During the last ice age A. alba survived in the refugia in southern Europe, the central Apennines, the south of the Balkan Peninsula and the Central Massif in France. Two other refugia remained isolated – one in Calabria in the south of the Apennines and one in the Pyrenees. Furthermore the most likely routes of postglacial recolonization of silver fir as well as the introgression zone between them have been identified. In Poland, silver fir reaches the north−eastern border of its natural range. Several earlier studies based on isozymes and DNA markers (mitochondrial and chloroplast) have reported that the Polish populations of fir are characterized by lower levels of genetic variation within populations and higher genetic differentiation between them than other coniferous species. Fir probably migrated to Poland from two glacial refugia located in the Balkan and Apennines Peninsula. Notwithstanding, a recent study on Polish silver fir populations carried out with mtDNA marker, strictly maternally inherited, indicated that the species migrated to the Polish territory from the refugium in western Europe. However, this study did not take into account the possibility of participation of pollen pool of Balkan origin in the formation of the Polish populations of fir. Until now, there have been only a few reports concerning the gene pool of fir in Poland. Therefore, it is necessary to supplement the knowledge about its genetic variation. In the course of several episodes of silver fir decline during the past century, its populations have decreased in size and currently are scattered throughout the entire European range. Reliable information on the distribution of genetic variation is a prere−quisite for proper management of forest genetic resources in a short−term and long−term perspective. The recognition of the existing genetic diversity is also the preliminary phase in development of an effective strategy for conservation of forest tree species gene pools.

Źródło:

Sylwan; 2015, 159, 02; 109-116
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 50.

Tytuł:

Określenie pochodzenia wyłączonych drzewostanów nasiennych sosny rychtalskiej (Pinus sylvestris L.) z wykorzystaniem markerów mikrosatelitarnych
Determination of the origin of the rychtal Scots pine (Pinus sylvestris L.) seed tree stands using microsatellite markers

Autorzy:

Wójkiewicz, B.
Żukowska, W.B.
Urbaniak, L.
Kowalczyk, J.
Litkowiec, M.
Lewandowski, A.

Powiązania:

https://bibliotekanauki.pl/articles/985719.pdf

Data publikacji:

2019

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

lesnictwo
hodowla lasu
sosna zwyczajna
Pinus sylvestris
sosna rychtalska
drzewostany nasienne
pochodzenie roslin
zmiennosc genetyczna
analiza DNA
markery mikrosatelitarne
scots pine
genetic variation
gene pool
genetic structure
ssr markers

Opis:

The rychtal pine is one of the most valuable ecotypes of Scots pine (Pinus sylvestris L.) approved for the breeding purposes in Poland. However, it occupies stands typical for oaks and beeches as shown by the compatibility analysis of species composition in relation to the habitat type in which they occur. Such result raises some doubts in terms of the naturalness of the rychtal pine and calls its history and origin into question. In the present study, we used the set of nuclear microsatellite markers to characterize and compare the gene pool composition of the selected seed tree stands of the rychtal pine with 200−year−old pine trees which grow at the Syców Forest District (SW Poland). We aimed to know to what extent the set of alleles specified for the group of the oldest trees from natural habitats is represented in the younger forest tree stands of the rychtal pine. The analysis of molecular variance (AMOVA) and clustering analysis showed that the gene pool of the studied pine populations was homogenous (FST=0,02%, K=1). The parameters of genetic variation were similar for all populations except for the mean number of alleles. On average, 25 new alleles were found in two rychtal pine seed tree stands as compared to the set of alleles found in the group of old pine trees. However, all alleles defined for old pines were also present in the gene pool of younger rychtal pine forest stands. The differences in the gene pool richness result most likely from quite high differences in the number of individuals analyzed from each population. In conclusion, our results indicate the common origin of the studied Scots pine populations.

Źródło:

Sylwan; 2019, 163, 08; 637-644
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

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