The analysis of regularities of distribution of alleles of avenin-coding loci in domestic selection oat varieties

Prolamin-coding loci have been successfully used as marker systems to identify adaptively significant gene associations. Oat prolamins avenins are inherited by groups and controlled by three independent loci: Avn A, Avn B, Avn C. The aim of the research was to study the relationship between geographical distribution of alleles of avenin-coding loci in oat samples and natural and climatic factors to identify alleles-markers of adaptively significant gene associations. The materials for the study were individual grains of 39 varieties and lines of oats of Russian selection of different ecological and geographical origin. It was found out that 14 samples had been homogeneous in the component composition of avenin. The remaining samples contained from 2 to 9 biotypes. The groups of samples originating from different regions differed in the frequency of occurrence of ACL alleles. Among the alleles of Avn A locus, A2 was the most common, and B1 and B4 alleles were characterized by the highest frequency of occurrence at Avn B locus...