[Genetic mechanisms of the stimulating effect of mutagenic factors on the growth and development of plants].

Small doses of mutagenic factors were studied as applied to plant growth and development. It is found out that the stimulation effect is not the same in the laboratory and field experiments and is essentially modified by the environmental conditions. An opinion is advanced that nonspecific derepression and supression of genes are responsible for mechanisms of the mutagenic factors stimulating action. It is emphasized that the method of presowing irradiation in seed growing should not be applied.