Genetic diversity and population structure analysis of European hexaploid bread wheat (Triticum aestivum L.) varieties.

ABSTRACT: Progress in plant breeding is facilitated by accurate information about genetic structure and diversity. Here, Diversity Array Technology (DArT) was used to characterize a population of 94 bread wheat (Triticum aestivum L.) varieties of mainly European origin. In total, 1,849 of 7,000 tested markers were polymorphic and could be used for population structure analysis. Two major subgroups of wheat varieties, GrI and GrII, were identified using the program STRUCTURE, and confirmed by principal component analysis (PCA). These subgroups were largely separated according to origin; GrI comprised varieties from Southern and Eastern Europe, whereas GrII contained mostly modern varieties from Western and Northern Europe. A large proportion of the markers contributing most to the genetic separation

SUBMITTER: Nielsen NH 

PROVIDER: S-EPMC3981729 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature