Black germ of wheat in the conditions of the Krasnoyarsk forest-steppe

Krasnoyarsk Research Institute of Agriculture - a separate subdivision of the FRC KSC SB RAS, 66, Svobodny Ave., Krasnoyarsk, 660041, Russia

^* Corresponding author: nneshumaeva@list.ru

Abstract

Black germ is a ubiquitous disease of wheat, which, without particularly affecting crop yields, can affect the parameters of the technological evaluation of grain. Until now, there is no consensus on the nature of the occurrence of this disease. In our study, we studied the relationship between the visible symptoms of damage by a black germ and infection of seeds of spring soft wheat samples with fungi of the genera Alternaria and Biporalis in the conditions of the Krasnoyarsk forest-steppe. The phytopathological analysis of asymptomatic and black-embryonic grains revealed in the latter a significant excess of infestation with p. Alternaria fungi in two out of ten samples. There were no differences in seed infection with p. Biporalis micromycetes between the variants. Only in one sample, the germination of seeds with manifested symptoms of the disease was lower than in visually healthy ones. The percentage of germination of other varieties and lines in both variants did not differ statistically significantly.