Identification of grain quality genes among wintercommon wheat varieties

   Currently, the agricultural market offers a wide range of winter wheat varieties of domestic breeding. However, due to climate warming and the increasing frequency of arid years, it is urgent to develop varieties with wide adaptability, large productivity potential and grain quality.   The purpose of the current study was to identify new genetic sources of winter common wheat with a complex of favorable gene alleles that control grain quality traits. In 2022–2023 there was studied the collection of 26 winter common wheat varieties from breeding institutions of the Rostov region and Krasnodar region using generally accepted breeding techniques.   There was carried out an analysis of technological quality traits and identification of loci associated with these traits using KASP-markers developed at the Institute of Plant Biology and Biotechnology (Kazakhstan). The varieties developed by the Federal Rostov ARC generated the largest productivity (341 g/m2) with less accumulation of protein and gluten (14.2 and 29.5 %), and, on the contrary, the varieties of the ARC “Donskoy” and the National Grain Center named after P. P. Lukyanenko were characterized by higher percentage of protein and gluten (15.5–15.7 and 33.2–34.4 %), but lower productivity (244–276 g/m2). The varieties ‘Donskoy Mayak’, ‘Konkurent’, ‘Nakhodka’, ‘Rostovchanka 7’, ‘Duplet’ and the line ‘K 18918’ were distinguished by the best technological traits of grain (protein >15 %, gluten > 30 %, gluten index > 85 % and sedimentation ≥ 53 %) and many favorable alleles of SNP loci associated with these features. The varieties ‘Donna’, ‘Zolushka’, ‘Donskaya Lira’ exceeded the standard ‘Omskaya 4’ (368–378 g/m2) in productivity, but their allelic variants of the identified markers were lower. There have been identified the varieties ‘Donna’, ‘Zolushka’, ‘Donskaya Lira’ (Federal Rostov ARC), ‘Donskoy Mayak’, ‘Konkurent’, ‘Nakhodka’, ‘Rostovchanka 7’ (ARC “Donskoy”), ‘Duplet’, ‘line K 18918’ (“National Grain Center named after P. P. Lukyanenko”) with the maximum number of favorable alleles (10–11), associated with technological quality traits, recommended for improving winter wheat varieties in terms of grain quality.