The purpose of this study was to determine the heritability of certain traits under low temperatures both at the stage of early plant development and at the haploid level, while identifying potentially stress resistant and productive hybrids. 14 simple hybrids of the first generation were used as the initial materi-al. The variability of signs of early development of plants and male gametophyte under low temperatures was evaluated. The coefficients of heritability of maternal and paternal genotypes under stressful condi-tions are calculated. A reliable dependence of the variability of the "pollen grain diameter" trait on the interaction of parental genotypes with a stress factor is shown. Hybrids Mo17xN6, Mo17xW23, A285xRf7, XL12xN6, XL12xP101 were the best in terms of the characteristics studied in the experiment.