The main purpose of our investigations are to describe the genotypic variation of new mutant winter wheat forms by plant height and structure, investigation of role genotype-mutagen interactions at formation of new trait. The most target objects are developing relations between genotype and nature of chemical mutagen, mutagen concentration.

Winter wheat seeds of seven varieties and one line were soaked with solutions of chemical mutagen dimethylsulfate (DMS) 0.0125, 0.025 and 0.05%. In M₂–M₃ mutation families have been selected via visual estimation (high stem, short stem, semi-dwarf, dwarf, difference types of waxy bloom and thickness of stem), estimation of heritability was conducted at M₄–M₈.