Separate effects on gluten strength of Gli-1 and Glu-3 prolamin genes on chromosomes 1A and 1B in durum wheat

Abstract

Abstract Two recombinants between Gli-A1 and Glu-A3 prolamin genes and seven between Gli-B1 and Glu-B3 obtained from two crosses of durum wheat were classified on the basis of the prolamin alleles at the Glu-A1, Gli-A1, Glu-A3, Gli-A2, Glu-B1, Gli-B1 and Glu-B3 loci. The separate effects on gluten strength of gliadin genes at Gli-1 and low M r glutenin subunit genes at Glu-3 were estimated by comparing the SDS-sedimentation test values of the recombinants with those of the same progeny having the same prolamin composition, except for the recombined alleles. The results showed clearly that low M r glutenin subunit genes at Glu-A3 and Glu-B3 , rather than gliadin genes at Gli-A1 and Gli-B1 , were responsible for the differences in gluten strength.