HORDEIN POLYMORPHISM IN SPRING BARLEY VAR IETIES

Starch-gel electrophoresis was used to study hordein polymorphism in 2 28 spring barley varieties cultivated in the former USSR from 1929 to 1991. Twenty-nine alleles were revealed for the locus Hrd A, forty-eig ht alleles were found for locus Hrd B, and four alleles were found loc us for Hrd F. Allele frequencies varied from 0.04% to 53.90%. Hordein variants encoded by the Hrd A, Hrd B, and Hrd F loci were catalogued a nd genetic formulas of hordein were listed for all analyzed cultivars. It was shown that a decrease of allelic diversity of Hrd loci occurre d during the last thirty years.