POLYMORPHISM AND STRUCTURE OF CULTIVATED BARLEY POPULATION IN THE WESTERN PAMIRS WITH RESPECT TO HORDEIN CODING LOCI

Alleles of Hrd A and Hrd B loci were studied in populations of the loc al barley cultivar Dzhau Kabutak grown at 1800, 2200, and 2600 m above sea level. Dynamics of alleles of hordein coding loci were analyzed i n the population transferred from 2600 to 1800 m above sea level and g rown there for three years. Composition and frequencies of alleles dif fered significantly in populations grown at different altitudes. Diver gence of populations after transfer from 2600 to 1800 m was shown by m eans of genetic distances. It was found that adaptivity of hordein gen otypes corresponds to a multiplicative model.