Structural patterns and genetic diversity among oat (Avena) landraces assessed by microsatellite markers and morphological analysis

摘要: As a counterweight to genetic erosion, landraces could become important germplasm resources for breeding. In the present study diversity of 62 Greek and Eastern European oat accessions (seven cultivars 55 common red collected from 1904 1960) was studied using simple sequence repeats 31 morphological descriptors. High levels polymorphism were detected 209 distinctive alleles identified; on average 14.65 per primer. Both, principal component analysis derived data, unweighted pair group method with arithmetic mean molecular clustered genotypes according their type (common oats). addition, variation showed that there noteworthy differences within designated geographic regions. Moreover, more discrete subpopulation structure identified based allele frequency Bayesian clustering approach. A clear distinction evident among oats suggesting they should be considered as separate species.