[Marker characters of variation induced in Triticum aestivum L. by nicotinic acid]

A search for markers of epigenetic variability in spring common wheat form Genotroph-1, obtained after the treatment of seeds and growing plants of spring common wheat cultivar Kazakhstanskaya-126 with nicotinic acid of innate origin (0.1-0.01% water solutions), and in a winter wheat line Gostianum-88 along with a common wheat cultivar Alem obtained on the basis of Genotroph-1 was conducted under laboratory conditions. The possibility of using isoenzymes as markers for studying variation induced by natural nicotinic acid with high frequency was demonstrated. Enzyme glutamate oxaloacetate transaminase-2, as a marker by which modified plants and lines obtained on the basis of these plants differ from the original cultivar, was identified.