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Comparing genetic diversity and population structure of common beans grown in Kyrgyzstan using microsatellites

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Author(s): Sergey Hegay | Mulatu Geleta | Tomas Bryngelsson | Larisa Gustavsson | Helena Persson Hovmalm | Rodomiro Ortiz

Journal: Scientific Journal of Crop Science
ISSN 2322-1690

Volume: 1;
Issue: 4;
Start page: 63;
Date: 2012;
Original page

Keywords: Common bean | Genetic diversity | Simple sequence repeats | Structure | Phaseolus vulgaris

ABSTRACT
Common bean (Phaseolus vulgaris L.) is an important export crop in Kyrgyzstan. The aim of this study was to assess the extent of genetic diversity, determine the population structure, and relate to the main gene pools grown in Kyrgyzstan. Twenty-eight common bean accessions (including five Kyrgyz cultivars, and main references from the Mesoamerica and South America) were evaluated with microsatellites. Nine polymorphic microsatellites were used to estimate genetic diversity and heterozygosity. The number of alleles per microsatellite locus ranged from 2 to 4 and there were a total of 24 alleles. The observed heterozygosity of each accession over all loci ranged from 0 to 1.11 (with an average of 0.05), while the expected average heterozygosity was 0.08, which could reflect the self-pollinating breeding behavior of common beans. The analysis of molecular variance further revealed that 94.71% of the total variation was accounted by differences among accessions (Fst =0.947; p
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