Identification and effects of alleles of gene Vrd2 according to economically valuable attributes of wheat in conditions of South Steppe of Ukraine

Abstract

The purpose. To identify recombinant-and-inbred lines of combination of crossing Orenburgskaya 48//Cappelle Desprez/2B Chinese Spring and to assess effects of alleles of gene Vrd2 on some economically valuable attributes. Methods. Temporal vernalization, genetic research, biological statistics. Results. Genotypes are identified of parent ingredients and recombinant-and-inbred lines of wheat Orenburgskaya 48//Cappelle Desprez/2B Chinese Spring for allelic state of gene Vrd2. Caрpelle Desprez/2В Chinese Spring and 43 lines are the carrying agents of dominant allele of gene Vrd2, while grade Orenburgskaya 48 and 18 lines-of recessive vrd2. Effect of alleles of gene Vrd2 on separate economically valuable attributes is evaluated. Conclusions. In comparison with lines-carriers of recessive allele vrd2, presence of dominant allele Vrd2 results into decrease of winter-and frost resistance, cutting time to heading increase of weight of grains for an ear and grain yield.

Features of modern winter wheat varieties in terms of winter hardiness components under conditions of Ukrainian Forest-Steppe

“…Given the above, to characterize modern genotypes of winter wheat on genetic systems that determine the processes of vernalization, photoperiod sensitivity, frost resistance and their impact on growth, development and general adaptive potential is relevant (Bakuma, 2016;Fayt et al, 2017;Jones et al, 2017). It was found that under various agroclimatic conditions there are different combinations of vernalization requirement and photoperiod sensitivity in winter wheat genotypes, which leads to increased adaptive potential, in particular, frost resistance (Whittal et al, 2018;Kawakita et al, 2020;Royo et al, 2020).…”