Skocz do pozycji: 1.

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

/5

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Skocz do pozycji: 2.

Tytuł:

Genetic variation of cowslip [Primula veris L.] populations [West Poland]

Autorzy:

Morozowska, M
Krzakowa, M.

Powiązania:

https://bibliotekanauki.pl/articles/57550.pdf

Data publikacji:

2003

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

Primulaceae
Polish population
botany
Primula veris
allozyme
gene flow
Primula
genetic differentiation

Opis:

Genetic variation of twelve Polish populations of Primula veris L. from western Poland was investigated in respect of six enzyme systems: 6-phosphogluconate dehydrogenase (6PGD), diaphorase (DIA), menadione reductase (MNR), formate dehydrogenase (FDH), isocitrate dehydrogenase (IDH) and glutamate oxaloacetate transaminase (GOT). Only two of them (6PGD and DIA) were polymorphic and all populations were compared according to four loci and eight alleles. For 6PGD only one out of the two detected loci (locus 6PGD-2) was polymorphic and consisted of three alleles a, b and c. For DIA each of two detected loci had two alleles. For 6PGD-2 one population was monomorphic and four populations were monomorphic for DIA-1 and DIA-2. The rest of the populations were polymorphic with low frequency of heterozygotes. The low heterozygosity level, found in the examined populations, was confirmed by high values of the fixation index (F). The level of genetic differentiation among GST populations specified for each polymorphic loci, was equal to 0.045 for 6PGD-2 and had the value of 0.078 for DIA-2 and 0.186 for DIA-1. Nm value for polymorphic loci was 1.10 for DIA-1 and 2.94 for DIA-2, and for 6PGD-2 was 5.33, what indicates some gene flow between the examined populations. The dendrogram constructed on the basis of genotype frequencies showed that the populations were divided into two groups, however the most southern population No. 2 was clearly similar to the northern population No. 8.

Źródło:

Acta Societatis Botanicorum Poloniae; 2003, 72, 4
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

Genetic variation, development and availability of useful germplasm for plant breeding.

Autorzy:

Anioł, Andrzej

Powiązania:

https://bibliotekanauki.pl/articles/2198795.pdf

Data publikacji:

2001-12-20

Wydawca:

Instytut Hodowli i Aklimatyzacji Roślin

Źródło:

Plant Breeding and Seed Science; 2001, 45, supplement; 33-43
1429-3862
2083-599X

Pojawia się w:

Plant Breeding and Seed Science

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:

Zmiana genetyczna: ślepa, ukierunkowana, interpretatywna?
Genetic Variation: Blind, Directed, Interpretative?

Autorzy:

Jablonka, Eva
Lamb, Marion J.

Powiązania:

https://bibliotekanauki.pl/articles/553445.pdf

Data publikacji:

2008

Wydawca:

Uniwersytet Zielonogórski. Instytut Filozofii

Tematy:

lamarkizm
rozmnażanie płciowe
teoria ewolucji
mutacja interpretatywna
mutacja ślepa
mutacja kierowana
mutacja
Lamarckism
sexual reproduction
evolutionary theory
interpretative mutation
blind mutation
directed mutation
mutation

Opis:

W artykule poruszone zostało zagadnienie pochodzenia zmienności genetycznej. Dwa jej źródła to: mutacje genetyczne i rozmnażanie płciowe. Autorki zasadniczo skupiają się na mutacjach, kwestii rozmnażania płciowego pozostawiając rolę wstępu. Mieszanie genów od nieidentycznych osobników, przekazywanie różnego materiału genetycznego każdemu z potomków oraz rekombinacja genów w procesie crossing-over są podstawowymi skutkami rozmnażania płciowego. Co do mutacji genetycznych, to oprócz całkowicie ślepych zmian genomu oraz w pełni ukierunkowanych reakcji fizjologicznych organizmu, zdaniem autorek, istnieje całe spektrum procesów, które należałoby umieścić gdzieś między dwoma tymi ekstremami. Omówieniu tego trzeciego typu mutacji – nie do końca losowych, ale też nie w pełni zdeterminowanych – poświęcona jest zasadnicza część tekstu.
The article brings up the issue of genetic variability source. Two causes of that variability are genetic mutations and sexual reproduction. The authors generally focus on the mutations. The issue of sexual reproduction is concerned only as an introduction. Mixing of genes from non-identical parents, transmission of different genetic material to every descendant, and recombination of genes in the crossing-over process are the main effects of sexual reproduction. As for genetic mutations, authors say that in addition to entirely blind genetic variation and absolutely directed physiological reactions of organism there is a whole spectrum of processes which should be placed somewhere between these two extremes. The basic part of this text refers to this particular third type of mutations – not exactly random but, at the same time, not entirely determined.

Źródło:

Filozoficzne Aspekty Genezy; 2007-2008, 4-5; 163-201
2299-0356

Pojawia się w:

Filozoficzne Aspekty Genezy

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

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

/5

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Skocz do pozycji: 6.

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

/5

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Skocz do pozycji: 7.

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

/5

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Skocz do pozycji: 8.

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

/5

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Skocz do pozycji: 9.

Tytuł:

Genetic variation of safflower (Carthamus tinctorius L.) and related species revealed by ISSR analysis

Autorzy:

Bagmohammadi, Hamed
Pahlevani, Mohammadhadi
Ahmadikhah, Asadollah
Razavi, Seyed Esmaeil

Powiązania:

https://bibliotekanauki.pl/articles/2199709.pdf

Data publikacji:

2012-08-20

Wydawca:

Instytut Hodowli i Aklimatyzacji Roślin

Tematy:

Genetic diversity
ISSR markers
relationships
safflower
wild spices

Opis:

Genetic diversity of eight genotypes of Carthamus tinctorius L., two populations of C. oxyacanthus, and one population of C. lanatus was investigated using inter-simple sequence repeat (ISSR) markers. All samples were uniquely distinguished by 10 ISSR primers with 144 bands which generated 100% polymorphism. Furthermore, the ISSR markers could separate three safflower species properly, that highlights the effectiveness of this marker system for phylogenetic studies. The most and least informative primers were ISSR9 (PIC=0.367) and ISSR2 (PIC=0.254), and some primers were more efficient in detecting polymorphism in one species than for the others. Unweighed pairgroup method with arithmetical averages (UPGMA) cluster analysis enabled construction of a dendrogram  for estimating genetic distances among different populations. The result of cluster analysis suggested that cultivated and wild populations of C. oxyacanthus had close relationship with each other and far relationship with C. lanatus. The extreme genetic dissimilarity was observed between genotypes of C. tinctorius and C. lanatus populations. Based on the results, C. oxyacanthus could introduce favorable genes to cultivated safflower via inter-specific hybridization in breeding programs. Nei’s gene diversity index, Shannon’s index and percent of polymorphic loci showed that Isfahan ecotype of C. oxyacanthus had the highest variation at DNA level in relation to populations of other species. The ISSRs developed in this research along with those recently studied by other researchers will contribute to construct genetic map with a density sufficient for safflower molecular breeding.

Źródło:

Plant Breeding and Seed Science; 2012, 66; 139-150
1429-3862
2083-599X

Pojawia się w:

Plant Breeding and Seed Science

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 10.

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: 11.

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: 12.

Tytuł:

Genetic variation of arta populations (Calligonum polygonoides subsp. comosum) in Egypt : Genepools for biodiversity and afforestation

Autorzy:

Mahdy, Ehab M.B.
Rizk, Rehab M.

Powiązania:

https://bibliotekanauki.pl/articles/2203540.pdf

Data publikacji:

2023

Wydawca:

Instytut Technologiczno-Przyrodniczy

Tematy:

afforestation
biodiversity conservation
Calligonum polygonoides
genetic diversity

Opis:

Genetic diversity manipulates a prime and vital role in the sustainable use of genetic resources. The data highlighted more insights into the genetic diversity of the arta plant (Calligonum polygonoides subsp. comosum) populations collected from three localities, Qalabshu (QQ), Mutubas (MM) and Gamasa (GG), in Egypt as gene pool for biodiversity conservation and afforestation. Random amplified polymorphic DNA (RAPD) markers investigated the population pattern and structure. A total of 129-amplicons oscillated from 145 to 1505 bp and a total of 19-amplicons were specific markers with an average of nine bands for each population. The Shannon index (I) scored at an average of 0.3. The diversity (h) oscillated from 0.11 to 0.25. The similarity matrices based on Jaccard coefficient recorded positive values. A higher correlation (r = 0.83) was between the combined Qalabshu (QQ) and Mutubas (MM) matrices using the Mantel test with 1,000 permutations. This species has higher adaptability for their regions. This gene pool is a valuable reservoir for enriching genetic diversity and provides basal information for the biodiversity conservation of a dominant species. The dominant species can be utilised in afforestation in the same region or another region which has the same environmental conditions.

Źródło:

Journal of Water and Land Development; 2023, 56; 81--90
1429-7426
2083-4535

Pojawia się w:

Journal of Water and Land Development

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

Tytuł:

Genetic variation of silver fir progeny from Tisovik Reserve population determined via microsatellite and isozyme markers

Autorzy:

Pawlaczyk, E.M.
Baczkiewicz, A.
Buczkowska, K.
Bobowicz, M.A.

Powiązania:

https://bibliotekanauki.pl/articles/38542.pdf

Data publikacji:

2017

Wydawca:

Instytut Badawczy Leśnictwa

Źródło:

Folia Forestalia Polonica. Series A . Forestry; 2017, 59, 1
0071-6677

Pojawia się w:

Folia Forestalia Polonica. Series A . Forestry

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

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

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Skocz do pozycji: 15.

Tytuł:

Morpholigica similarity and genetic variation of Trochulus striolatus (C. Pffeiffer, 1825) and Trochulus montanus (Studer, 1820) (gastropoda, pulmonata, hygromidae)

Autorzy:

Prockow, M.
Strzala, T.
Kuznik-Kowalska, E.

Powiązania:

https://bibliotekanauki.pl/articles/84609.pdf

Data publikacji:

2013

Wydawca:

Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich

Źródło:

Folia Malacologica; 2013, 21, 3
1506-7629

Pojawia się w:

Folia Malacologica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 16.

Tytuł:

Genetic variation of hordein polypeptides in grains of mutants of hulless spring barley [Hordeum vulgare L.] breeding line

Autorzy:

Kapala, A
Rybinski, W

Powiązania:

https://bibliotekanauki.pl/articles/2047707.pdf

Data publikacji:

1996

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

polypeptide spectrum
breeding line
barley
mutant
Hordeum vulgare
hordein polypeptide
hull

Opis:

Hordein polypeptides patterns of 146 mutants in M7 from a hulless spring barley breeding line were examined. The mutants were obtained after treatment of grains of Polish hulless spring barley breeding line, 1N/86, with the chemomutagens N-nitroso-N-methylurea and sodium azide. The mutants were distinguished from the parental line with regard to morphological and yield structure traits. SDS-PAGE of the main hordein fractions, B and C, showed that the electrophoretic patterns of the majority of the analysed mutants were similar to the hordein polypeptide spectrum of the parental line. However, specific hordein patterns were obtained from six of the mutants. In the previous study, the same mutants showed a significantly better feeding value as compared to hulled cultivars and the rest of the analysed mutants.

Źródło:

Journal of Applied Genetics; 1996, 37, 1; 29-35
1234-1983

Pojawia się w:

Journal of Applied Genetics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

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

/5

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Skocz do pozycji: 18.

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: 19.

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: 20.

Tytuł:

Genetic Variation as a Possible Explanation for the Heterogeneity of Pain in Tendinopathy: What can we learn from other pain syndromes?

Autorzy:

Mkumbuzi, Nonhlanhla S.
Posthumus, Michael
September, Alison V.
Collins, Malcolm

Powiązania:

https://bibliotekanauki.pl/articles/1942934.pdf

Data publikacji:

2021

Wydawca:

Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego

Tematy:

tendon pain
genetics
extracellular matrix genes
inflammation genes
COMT

Opis:

The mechanisms of pain in tendinopathy are unclear. Current theories implicate tendon structural changes, neovascularisation, inflammation or changes in central pain processing. As with other types of musculoskeletal pain, tendon pain has high interindividual variability and, as with other types of pain, this could be attributed to genetic variation. Notably, the association between certain genetic polymorphisms and susceptibility to tendinopathy is well established in the literature. Therefore, the investigation of the mechanisms of tendon pain should also extend to include genetic variation as a possible explanation for the clinical features of tendon pain. This review summarises the current knowledge on genetic contributors to chronic pain and highlights findings that are relevant to chronic tendon pain. In particular, based on the current hypotheses on the possible sources of tendon pain, it focuses on findings that relate to genes that encode structural connective tissue components, inflammatory markers, ion channels and catecholamines and how they may relate to chronic tendon pain. In the absence of a definitive mechanism of tendon pain, an a priori genetic approach that is guided by these current hypotheses may help elucidate the mechanisms of tendon pain which may allow a more rational approach to research and treatment.

Źródło:

Central European Journal of Sport Sciences and Medicine; 2021, 36; 57-72
2300-9705
2353-2807

Pojawia się w:

Central European Journal of Sport Sciences and Medicine

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

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

/5

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Skocz do pozycji: 22.

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: 23.

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: 24.

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

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Skocz do pozycji: 25.

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: 26.

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: 27.

Tytuł:

Wykorzystanie krzyżowania oddalonego do poszerzania zmienności genetycznej w rodzaju Brassica sp.
The usage of distant crosses for the extension of genetic variation in Brassica sp.

Autorzy:

Sosnowska, K.

Powiązania:

https://bibliotekanauki.pl/articles/833044.pdf

Data publikacji:

2011

Wydawca:

Instytut Hodowli i Aklimatyzacji Roślin

Źródło:

Rośliny Oleiste - Oilseed Crops; 2011, 32, 2
1233-8273

Pojawia się w:

Rośliny Oleiste - Oilseed Crops

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

Zmienność genetyczna jodły pospolitej (Abies alba Mill.) zachowanej na terenie Nadleśnictwa Katowice
Genetic variation of silver fir (Abies alba Mill.) preserved in the Katowice Forest District

Autorzy:

Masternak, K.
Niebrzydowska, B.
Głębocka, K.

Powiązania:

https://bibliotekanauki.pl/articles/1311865.pdf

Data publikacji:

2015

Wydawca:

Instytut Badawczy Leśnictwa

Tematy:

lesnictwo
Nadlesnictwo Katowice
drzewa lesne
jodla pospolita
Abies alba
zmiennosc genetyczna
markery ISSR
genetic diversity
ISSR markers
growth traits
industrial pollution

Opis:

Environmental pollution greatly decreases a tree’s health and results in dieback of forest stands. Due to increasing industrial activity in the 20th century, silver fir became almost totally extinct in the Katowice Forest District. Only 19 individuals have survived to this day. The aim of the present study was to analyze growth characteristics and polymorphisms of 25 inter-simple sequence repeats (ISSR) of the preserved trees. The mean height of the inventoried silver firs was 19 m with a diameter at breast height (DBH) of 29 cm. Flowers were observed on few trees only. However, all trees were of high vitality without signs of fungal pathogen infections or insect outbreaks. Parameters of genetic variability, including mean effective number of alleles per locus and expected heterozygosity, were higher than described in the literature so far and they amounted to 1,659, 0,396 respectively.

Źródło:

Leśne Prace Badawcze; 2015, 76, 4; 315-321
1732-9442
2082-8926

Pojawia się w:

Leśne Prace Badawcze

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

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

/5

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Skocz do pozycji: 30.

Tytuł:

Polimorfizm izoenzymowy i zmienność genetyczna wybranych populacji cząstkowych świerka rasy istebniańskiej
Isozyme polymorphism and genetic variation of selected partial populations of Istebna spruce [Picea abies [L.] Karst]

Autorzy:

Polak-Berecka, M.
Perchlicka, I.

Powiązania:

https://bibliotekanauki.pl/articles/1017254.pdf

Data publikacji:

2007

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

zmiennosc genetyczna
polimorfizm
izoenzymy
ekotypy
Picea abies
lesnictwo
swierk istebnianski
swierk pospolity
drzewa lesne
genetic diversity
isozyme polymorphism
picea abies
poland

Opis:

The genetic structure of Norway spruce [Picea abies (L.) Karst] of the Istebna race was studied in two populations from the Carpathian seed stands in the Malinka and Czarne Forestries. The recent provenance test results have shown a high quality of both populations. The results were compared with the genetic variation parameters calculated for the selected seed stand from the Bukowiec Forestry (compartment 149h), whose genetic structure in the progeny test for this species is considered a national standard. Five enzyme systems were analysed. The results show that the mean number of alleles per locus and the heterozygosity observed in the analysed populations are greater than those reported in the literature for other natural Norway spruce populations from the Carpathians. The heterozygosity level of the studied seed stands was higher than of the selective population of the Istebna spruce plus trees and the level of genetic diversity was similar to that of the Bukowiec seed stands. Thus, it can be concluded that the analysed seed stands from Czarne and Malinka, compartment 91h can be used as a supplementary seed base. However, at the individual partial population level, the Bukowiec spruce population, compartment 149h is considered to be of the highest value.

Źródło:

Sylwan; 2007, 151, 10; 47-53
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 31.

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

/5

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Skocz do pozycji: 32.

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: 33.

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: 34.

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

/5

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Skocz do pozycji: 35.

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

/5

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Skocz do pozycji: 36.

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

/5

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Skocz do pozycji: 37.

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

/5

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Skocz do pozycji: 38.

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

/5

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Skocz do pozycji: 39.

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: 40.

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: 41.

Tytuł:

Molekularna charakterystyka wpływu elementów mobilnych na zmienność genetyczną w zbożowych kulturach in vitro
Molecular characterization of the impact of transposable elements on genetic variation in cereals tissue cultures

Autorzy:

Orłowska, Renata
Bednarek, Piotr T.
Bany, Sławomir

Powiązania:

https://bibliotekanauki.pl/articles/2199457.pdf

Data publikacji:

2019-11-30

Wydawca:

Instytut Hodowli i Aklimatyzacji Roślin

Tematy:

jęczmień
kultury tkankowe
MSTD
retrotranspozony

Źródło:

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin; 2019, 286; 111-112
0373-7837
2657-8913

Pojawia się w:

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 42.

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

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Skocz do pozycji: 43.

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: 44.

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

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Skocz do pozycji: 45.

Tytuł:

Wyniki wstępnych badań nad zmiennością genetyczną oraz zróżnicowaniem genetycznym między populacjami wiązu górskiego (Ulmus glabra Huds.) w Polsce
Results of preliminary research on genetic variation and genetic differentiation between Wych elm populations (Ulmus glabra Huds.) in Poland

Autorzy:

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

Powiązania:

https://bibliotekanauki.pl/articles/985889.pdf

Data publikacji:

2018

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

lesnictwo
drzewa lesne
wiaz gorski
Ulmus glabra
zmiennosc genetyczna
markery mikrosatelitarne
populacje roslin
zroznicowanie genetyczne
Polska
zasoby genetyczne
wych elm
genetic variation
microsatellite markers
genetic resources
ex situ conservation

Opis:

Wych elm (Ulmus glabra Huds.) is a rare scattered forest tree species in Poland. First studies on genetic diversity of the species in its natural range in Poland give a good basis for the management and conservation of its genetic resources. In the present study, we determined the level of genetic variation and genetic differentiation of seventeen natural Wych elm populations in Poland using nine nuclear microsatellite loci. The number of analyzed individuals was 601. The level of genetic diversity of Polish populations of Wych elm corresponded with the results of the previous studies on this species in Europe. The populations show quite low level of genetic diversity of the species on the population level and quite high diversity on the interpopulation level. A total of 119 alleles was found, with average number per locus (A) equal 6.0 and allelic richness at medium high level (AR10=4.7). Observed (Ho) and expected (He) heterozygosity reached 0.583 and 0.602 respectively. The genetic differentiation between Polish populations of Wych elm occurred at a low level (Fst=0.089). Inbreeding depression may occur in the next generations (Fis=0.031). Genetic diversity between Wych elm populations in Poland may be the result of unfavorable random processes related to the reduction of population size resulting from elm disease. To better understand the processes related to the genetic diversity of Wych elm populations, research on field elm variation should be undertaken. Such studies may give an answer to the potential influence of introgression between these species on the genetic structure of the Wych elm. Both in situ as well as ex situ conservation measures are highly recommended to preserve genetic resources of this valuable noble hardwood species in Polish landscape.

Źródło:

Sylwan; 2018, 162, 09; 727-736
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 46.

Tytuł:

Identyfikacja zmienności genetycznej pszenicy korelującej z potencjałem plonotwórczym i wybranymi cechami systemu korzeniowego
Identification of genetic variation of wheat correlating with grain yield and development of root system

Autorzy:

Nadolska-Orczyk, Anna
Barchacka, Karolina
Gasparis, Sebastian
Ogonowska, Hanna
Kała, Maciej

Powiązania:

https://bibliotekanauki.pl/articles/2199464.pdf

Data publikacji:

2019-11-30

Wydawca:

Instytut Hodowli i Aklimatyzacji Roślin

Tematy:

aktywność enzymu CKX
ekspresja genów TaCKX
masa korzenia
produktywność
pszenica

Źródło:

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin; 2019, 286; 21-25
0373-7837
2657-8913

Pojawia się w:

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 47.

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: 48.

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: 49.

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

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Skocz do pozycji: 50.

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

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