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Wyszukujesz frazę "genetic diversity" wg kryterium: Temat


Tytuł:
Evidence for RNA recombination between distinct isolates of Pepino mosaic virus
Autorzy:
Hasiów-Jaroszewska, Beata
Kuzniar, Arnold
Peters, Sander
Leunissen, Jack
Pospieszny, Henryk
Powiązania:
https://bibliotekanauki.pl/articles/1040390.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
genetic diversity
recombination
PepMV
Opis:
Genetic recombination plays an important role in the evolution of virus genomes. In this study we analyzed publicly available genomic sequences of Pepino mosaic virus (PepMV) for recombination events using several bioinformatics tools. The genome-wide analyses not only confirm the presence of previously found recombination events in PepMV but also provide the first evidence for double recombinant origin of the US2 isolate.
Źródło:
Acta Biochimica Polonica; 2010, 57, 3; 385-388
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Full length genome sequence of Polish isolate of Beet soil-borne virus confirms low level of genetic diversity
Autorzy:
Borodynko, Natasza
Hasiów-Jaroszewska, Beata
Rymelska, Natalia
Pospieszny, Henryk
Powiązania:
https://bibliotekanauki.pl/articles/1040498.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
BSBV
genetic diversity
Polymyxa betae
Opis:
The complete nucleotide sequence of a Polish isolate of Beet soil-borne virus was determined for the first time. The genome organization was identical with those previously established for isolates from Germany and China. A comparison of the Polish isolate with others deposited in GenBank reveled high level of nucleotide identity, about 98-100%, throughout the genome analyzed. The ratio between non-synonymous and synonymous substitutions was rather low suggesting a negative selective pressure. The non-synonymous mutations were particulary frequent in triple gene block.
Źródło:
Acta Biochimica Polonica; 2009, 56, 4; 729-731
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic diversity of the Salix lapponum L. population intended as a source of material for reintroduction
Autorzy:
Głębocka, Katarzyna
Pogorzelec, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/956821.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
reintroduction
genetic diversity
salix lapponum
Opis:
Salix lapponum is a relict species that occurs in peat bogs. The most numerous population in Poland, which is located on Lake Bikcze, was selected as a source of plant material for genetic analysis to check if it could be used to translocate and establish new populations in the future. For this purpose, the genetic variability of five groups of plants, which were located 50 to 130 m away from one another, was assessed using the AFLP method. GenoType software did not indicate clonal individuals in the studied population. Although the groups were located at short distances from one another, the genetic differentiation between them, expressed as ΦPT and GST coefficients, was very high and the clustering methods adopted showed the presence of genetic structure. The lack of correlation between geographic distance and pair-wise ΦPT indicated that at least in the past the gene flow was fluent, but nowadays seedling recruitment is barely visible. These results can be explained by the fact that from the beginning of the 21st century the Lake Bikcze population has dramatically decreased in size. On the other hand, the expected heterozygosity in each group is quite high. If we want to use this population as a donor of reproductive material, action should be taken as quickly as possible.
Źródło:
Dendrobiology; 2017, 78; 136-145
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Endangered indigenous cattle breeds of Nigeria a case for their conservation and management
Autorzy:
Gwaza, D. S.
Momoh, O. M.
Powiązania:
https://bibliotekanauki.pl/articles/1192705.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Cattle-breed
Conservation
endangered
genetic-diversity
Opis:
The Nigeria cattle breeds and their productivity were reviewed. A case was made for their conservation and management, an action plan was also proposed for the Nigerian government. The indigenous cattle breeds of Nigeria have short calving interval, are hardy and trypanotolerant, known for early maturity with low mortality rate for total herd (2% and 4.7% for Muturu and Keteku respectively). The Kuri has high potentials for milk production and can calve up to twelve times in life time. They also have enormous contribution to source of income to many cattle rearers in Nigeria. The indigenous cattle breeds of Nigeria are endangered. The Muturu, N’dama and Keteku are endangered due to extensive uncontrolled crossbreeding with exotic breeds. There is also waning interest among farmers in the use of intact indigenous breeds. The Kuri and Biu cattle breeds are endangered due primarily to environment factors. The civil war also had a significant effect on the elimination of some indigenous cattle breeds especially the forest breeds. The endangered indigenous cattle breed can be conserved by the In-situ techniques. The cost of maintenance of the insitu preservation is often high, but it is to be preferred because it is less technically involving and can be well manage given adequate technologies and funds. The inbreeding effect and maintenance of natural habitat can be reduce by use of appropriate mating system and preservation of the original environment. The live conservation techniques can be organise into park with wild life for revenue generation. Rural farming communities can also be organize to form National indigenous cattle breed ownership Scheme (NICABROS), as a community based conservation management technology are action plans that are propose for insitu conservation of Nigerian endangered cattle breeds.
Źródło:
World Scientific News; 2016, 30; 68-88
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of RAPD, ISSR and SSR markers in assessing genetic diversity among rye*(Secale cereale L.) inbred lines
Autorzy:
Myśków, Beata
Milczarski, Paweł
Masojc, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2199589.pdf
Data publikacji:
2010-12-01
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
dendrogram
genetic diversity
molecular markers
rye
Opis:
Forty eight inbred lines of winter rye, of various origin and pedigree, were analysed using 19 RAPD (random amplified polymorphic DNA) primers, 8 ISSR (inter-simple sequence repeats) primers and 13 SSR (simple sequence repeats) primer pairs. On the basis of particular marker types, there were created three separate dendrograms and one combined similarity tree, prepared on account of the whole data. Correlation coefficients for individual technique based on genetic similarity matrices were not significant. By comparing the GS data obtained on the basis of singular methods with collective matrix, it was observed that the highest correlation rate was for ISSR method (r=0.68). The utility of each marker technique was compared by using marker index MI. Diversity detecting index (DDI) was suggested in the paper, which may prove helpful in planning and comparing researches on phenetic relationships...
Źródło:
Plant Breeding and Seed Science; 2010, 62; 107-116
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic variability of sotol (Dasyrylion cedrosanum) populations in the Mexican Coahuila southern area
Autorzy:
Rentería, Norma Paola Meléndez
Padilla, Veronica
Lozano, Gerardo Gaona
Aguilar, Cristobal Noe
Rodríguez-Herrera, Raúl
Powiązania:
https://bibliotekanauki.pl/articles/2199675.pdf
Data publikacji:
2012-08-20
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
AFLP
Genetic Diversity
Sotol
Dasylirion cedrosanum
Opis:
In the Chihuahuan desert area, in Mexico, exist an endemic plant denominated Sotol (Dasylirion spp); which is used by rural producers to manufacture a liqueur named Sotol. This beverage has origin denomination but it industrial application has lack scientific reports,  as well as the plant genetic information. This is the first study about ecological distribution of sotol plants and, may be, a first step to continue the scientific investigation of a Mexican endemic plant, with many potential industrial applications. In this paper, we used AFLP molecular markers to calculate population genetics parameters  as genetic diversity, a conglomerate analyses, poblational structure based in Wright´s statistics and analysis of molecular variance. Differences in soil composition and weather conditions, of the sampling region, may affect sotol plants growth and their morphologic characteristics; as consequence the organisms generate ample genetic variability, which ensures the species permanence. Genetic diversity values were similar to the average for cross-pollinated plants, while the heterozygosis detection was deficient; Wright statistics suggest plants genetics interchange in the subpopulation; AMOVA found significant differences within and between collections. These results help us to maintenance the genetic diversity, in order to prevent potential extinction and guarantee sustainable development; the preservation of the endemic plants is necessary to the ecosystems conservation and after Sotol origin denomina- tion, by the Mexican government, the importance of D. cedrosanum plants was increased.
Źródło:
Plant Breeding and Seed Science; 2012, 66; 75-88
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic status of Polish larch (Larix decidua subsp. polonica (Racib. Domin)) from Chełmowa Mountain: implications for gene conservation
Autorzy:
Litkowiec, M.
Lewandowski, A.
Burczyk, J.
Powiązania:
https://bibliotekanauki.pl/articles/2078281.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
European larch
genetic diversity
microsatellites
spatial genetic structure
Opis:
The Polish larch (Larix decidua subsp. polonica (Racib. Domin), a subspecies of European larch, is one of the most valuable forest-forming trees in Poland. It was first discovered on the Chełmowa Mountain where Natural Reserve has been established to protect this subspecies. Currently, this unique population is at risk of extinction. Nonetheless, the knowledge on the genetic diversity of this population and surround- ing larch forests is insufficient to undertake actions aimed at conservation of genetic resources. In this study, we examined the level of genetic diversity and differentiation of four subpopulations of Polish larch from Nature Reserve on the Chełmowa Mountain and surrounding areas. We used eleven nuclear microsatellite markers (SSRs) combined in two multiplex PCR reactions. In total, 344 individuals of Polish larch were genotyped and subjected to further population genetic analyses. We found the high level of genetic diversity (average: He = 0.752, Ho = 0.720) and low levels of genetic differentiation (average: Fst = 0.022). The effective population size was large and homogeneous across subpopulations (mean Ne=90.7), and we found no sign of inbreeding. The spatial genetic structure was detected in two older subpopulations but not in the younger one, suggesting its artificial origin. The old larch subpopulations were genetically homogeneous and they were related to the ancestral group of Polish lowland populations. The old larch core populations growing on Chełmowa Mountain are relatively homogeneous and they well represent the ancestral genetic group of Polish lowland larch populations. However, they still exhibit rela- tively high genetic diversity and sufficiently large effective population sizes assuring their adaptive potential for a long-term existence. Surrounding larch populations are even more genetically diverse but this might be the effect of an admixture of seed sources from various populations from a wider area of Central Europe. We recommend that specific conservation efforts should be undertaken to promote natural regeneration of the core larch populations, even supplemented by the planting of seedlings derived from the oldest larch trees. Other management actions should focus on limiting external gene flow to this unique population of Polish larch.
Źródło:
Dendrobiology; 2018, 80; 101-111
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic variability of Colobanthus quitensis from King George Island (Antarctica)
Autorzy:
Giełwanowska, Irena
Androsiuk, Piotr
Chwedorzewska, Katarzyna
Szandar, Kamil
Powiązania:
https://bibliotekanauki.pl/articles/2049620.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Antarctic
Colobanthus quitensis
genetic diversity
iPBS
Źródło:
Polish Polar Research; 2015, 3; 281-295
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Low genetic differentiation between two morphotypes of the gastropod Nacella concinna from Admiralty Bay, Antarctica
Autorzy:
Chwedorzewska, Katarzyna J.
Korczak, Małgorzata
Bednarek, Piotr T.
Markowska-Potocka, Marta
Powiązania:
https://bibliotekanauki.pl/articles/2051614.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Antarctica
Nacella concinna
genetic diversity
AFLP
Źródło:
Polish Polar Research; 2010, 2; 195-200
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
Tytuł:
Application of the RAPD technique to identify genetic diversity in cultivated forms of Capsicum annuum L.
Autorzy:
Niklas, A.
Olszewska, D.
Powiązania:
https://bibliotekanauki.pl/articles/2096389.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
RAPD technique
genetic diversity
Capsicum annuum L.
Opis:
Background. The extensive use of pepper fruit creates a constant demand for new cultivars with specific agromorphological properties. The wide variety of breeding materials of this species means that methods based on morphological traits descriptions are not always sufficient to allow for their identification. Genetic homogeneity must be guaranteed to ensure repeatability of phenotypic traits. Most often, molecular analyses characterizing diversity at the DNA level are used for this purpose. Material and methods. The PCR-RAPD technique was used for molecular analysis of the generative offspring of three cultivars of pepper: “Anchi”, “Luba” and “Sono” and their forms of different fruit colour. The genetic distance between the tested genotypes was determined using the Nei and Li formula. Results. The reaction with 26 RAPD primers resulted in a total of 262 products and 5.2% of them were polymorphic bands. Eight of the used primers generated 12 polymorphic products that differentiated the tested genotypes. The “Anchi” cultivar was identified by the primers A07, K10, Q07 and AE10. Starter Q07 identified as well the “Luba” cultivar. Reactions carried out with primers B10 and RAD1 identified the “Sono” cultivar. In addition, primer A15 generated products that made it possible to distinguish yellow-fruit and red-fruit forms within the “Luba” and “Sono” cultivars. Conclusion. The analyses showed a low degree of genetic distance between C. annuum L. cultivars confirming the genetic homogeneity of the examined groups of plants and creating and opportunity for molecular identification of the genetic diversity within the “Luba” and “Sono” cultivars.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2021, 102, 2; 171-177
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic variability and virulence of some Iranian Rhizoctonia solani isolates associated with stem canker and black scurf of potato (Solanum tuberosum L.)
Autorzy:
Esfahani, M.N.
Powiązania:
https://bibliotekanauki.pl/articles/2084743.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
genetic diversity
isolates
ISSR
RAPD
virulence variability
Opis:
Stem canker and black scurf of potato (Solanum tuberosum L.) caused by Rhizoctonia solani Kühn are important and epidemic diseases in potato-growing regions worldwide, including Iran. In this study, 120 isolates were retrieved from infected stem canker from six potato-growing regions in Iran (Isfahan, Ardebil, Fars, Hamedan, Kurdestan and Kerman). Out of these, 30 isolates were selected as representatives for genetic and virulence analysis. The isolates were analyzed by one sequence analyzes of the ITS-rDNA region, random amplified polymorphic DNA (RAPD) and inter-simple sequence repeat (ISSR), as well as virulence studies. Based on sequence analysis of the ITS-rDNA region, all 30 isolates were assigned to the anastomosis group (AG) and all were assigned to AG-3 PT. Cluster analysis using the unweighted pair group method with the arithmetic averages (UPGMA) method for both RAPD and ISSR markers revealed that they were divided into three main groups, with no correlation to geographical regions of the isolates. Pathogenicity tests showed that all isolates were pathogenic on potato cv. Agria; however, virulence variability was observed among the isolates. The grouping based on RAPD analysis and virulence variability was not correlated.
Źródło:
Journal of Plant Protection Research; 2020, 60, 1; 21-30
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
MOLECULAR DIVERSITY AND PHYLOGENY OF TRITICUM-AEGILOPS SPECIES POSSESSING D GENOME REVEALED BY SSR AND ISSR MARKERS
Autorzy:
Moradkhani, Hoda
Mehrabi, Ali Ashraf
Etminan, Alireza
Pour-Aboughadareh, Alireza
Powiązania:
https://bibliotekanauki.pl/articles/2199633.pdf
Data publikacji:
2015-06-20
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
Aegilops
genetic diversity
ISSR
molecular phylogeny
Triticum
SSR
Opis:
The aim of this study is investigation the applicability of SSR and ISSR markers in evaluating the genetic relationships in twenty accessions of Aegilops and Triticum species with D genome in different ploidy levels. Totally, 119 bands and 46 alleles were detected using ten primers for ISSR and SSR markers, respectively. Polymorphism Information Content values for all primers ranged from 0.345 to 0.375 with an average of 0.367 for SSR, and varied from 0.29 to 0.44 with the average 0.37 for ISSR marker. Analysis of molecular variance (AMOVA) revealed that 81% (ISSR) and 84% (SSR) of variability was partitioned among individu-als within populations. Comparing the genetic diversity of Aegilops and Triticum accessions, based on genetic parameters, shows that genetic variation of Ae. crassa and Ae. tauschii species are higher than other species, especially in terms of Nei’s gene diversity. Cluster analysis, based on both markers, separated total accessions in three groups. However, classification based on SSR marker data was not conformed to classification ac-cording to ISSR marker data. Principal co-ordinate analysis (PCoA) for SSR and ISSR data showed that, the first two components clarified 53.48% and 49.91% of the total variation, respectively. This analysis (PCoA), also, indicated consistent patterns of genetic relationships for ISSR data sets, however, the grouping of acces-sions was not completely accorded to their own geographical origins. Consequently, a high level of genetic diversity was revealed from the accessions sampled from different eco-geographical regions of Iran.
Źródło:
Plant Breeding and Seed Science; 2015, 71; 81-95
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic diversity of Betula nana in Sweden and conservation implications for protection of relict Polish populations
Autorzy:
Dąbrowska, Grażyna B.
Dąbrowski, Henryk P.
Szyp-Borowska, Iwona
Powiązania:
https://bibliotekanauki.pl/articles/2041027.pdf
Data publikacji:
2021
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
dwarf birch
RAPD
population
relict species
genetic diversity
Opis:
The natural range of the dwarf birch (Betula nana L.) includes the boreal, subarctic and arctic regions of Europe, Asia and North America, where it is relatively common. In Poland, it is a relict species occurring in fragmented populations. Using the random amplification of polymorphic DNA (RAPD) technique, we investigated the genetic diversity of the four Swedish populations representing a part of the continuous range of dwarf birch. With the knowledge of the level of genetic diversity of a population from a continuous distribution, we can assess the genetic status of polish populations and answer the question if habitat fragmentation and a decrease in population size lead to a loss in genetic diversity. Knowledge of genetic diversity is important for species conservation, especially to predict their ability to respond to environmental pressures. We found that the populations Abisko, Malbo, Gällivare and Storlien, which are located at the edge of the natural range of B. nana and occupy different habitats, are genetically diverse to varying degrees. The northern populations from Abisko and Gällivare showed a lower level of genetic polymorphism than the population from Malbo, the southernmost site of dwarf birch in Sweden. The data presented indicate higher genetic diversity existed within populations, whereas genetic differentiation between populations was lower. The high level of genetic differentiation within B. nana populations that were analysed in the present study may be explained by a limited capacity for dispersal among populations via both pollen and seeds. We found that the level of genetic diversity in one of the Polish populations of B. nana is comparable to that in areas in Scandinavia where populations are large and continuous. Based on these studies, we conclude that the “Linje” population has sufficient genetic resources.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2021, 63, 3; 225-231
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Temporal isolation between two strongly differentiated stocks of the Greenland halibut ( Reinhardtius hippoglossoides Walbaum, 1792) from the Western Barents Sea
Autorzy:
Wojtasik, Barbara
Kijewska, Agnieszka
Mioduchowska, Monika
Mikuła, Barbara
Sell, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/2041759.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
allozymes
discrete stocks
genetic diversity
heavy metals
Źródło:
Polish Polar Research; 2021, 42, 2; 117-138
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł

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