GLIADIN ALLELES IN CANADIAN WESTERN RED SPRING WHEAT CULTIVARS - USE OF 2 DIFFERENT PROCEDURES OF ACID POLYACRYLAMIDE-GEL ELECTROPHORESIS FOR GLIADIN SEPARATION

Gliadin allele compositions of 21 Canadian spring common wheat cultiva rs, most of which belong to the Canada western red spring (CWRS) class , were studied and great similarity in their genotypes was confirmed. It was found that alleles frequent in the set of Canadian wheats (such as Gli-B1d, Gli-D1j, Gli-A2m, and Gli-D2h) are very rare or absent in common wheat cultivars from other regions and countries studied earli er, indicating that germplasm of CWRS cultivars is rather unique. It m ay be suggested that alleles frequent in Canadian cultivars relate to important technological characteristics of these wheats and may possib ly serve as marker genes during selection for quality traits. Similari ty of gliadin electrophoregrams obtained by two different acid polyacr ylamide gel electrophoretic procedures for the same genotype was estab lished, and the component composition of allelic variants of blocks of gliadin components found in the set of Canadian cultivars and in stan dard cultivars Chinese Spring and Bezostaya 1 are described.