Variability of wheat technological quality propreties and their relationships with gliadin and glutenin alleles

Abstract

The storage proteins influence technological quality value of grain wheat, dough quality traits and loaf quality. The aim of this study estimation of variability grain protein content, sedimentation volume, dry gluten content, loaf volume and their relationships with encoding allele of gliadin and glutenins. For investigation used wheat genotypes grown in two vegetation season (2015/16 and 2016/17). The analysed technological quality traits varied in wheat genotypes within and between vegetation season. In both vegetation season were established the highest grain protein content in G-3627-1 (14.40% and 14.60%), the highest protein sedimentation volume in G-3606-5 (46.0 ml and 52.0 ml), the highest dry gluten content in G-3621-1 (30.23% and 31.15%) and the highest value of loaf volume in the G-3621-1 (530 ml and 540 ml). In both vegetation were found the least protein sedimantation volume in genotypes G-3636-3 (34.0 ml snd 36. ml), the least grain protein content in G-3606-4 (13.10% and 13.00%), the least dry gluten content was in G-3606-6 (25.42% and 25.98%) and the least loaf volume in G-3606-6 (380 ml and 390 ml). The composition of gliadin and glutenin alleles at the analyzed wheat geneotypes was different. In analysed wheat genotypes at six Gli- loci were identified 24 alleles and at three Glu-1 loci eight alleles. Genotypes carrying Gli-B1b, Gli-D1b, Gli-D2b and Glu-A1b, Glu-B1c, Glu-D1d had the highest sedimentation volume, genotype that carried Gli-B1l and Glu-A1b, Glu-B1c, Glu-D1d had high volume of bread. The results showed relationships of gliadin and glutenin alleles with analysed grain, flour and bread traits quality.