SPRING SOFT WHEAT VARIETIES` REACTION ON AGENTS OF DISEASESIN ULJANOVSK REGION
He carried out estimation of resistance to the basic diseases of spring soft wheat varieties, considering the different periods of variety changing, resulted in shift towards the resistance increasing to leaf diseases for the last 64 years. The varieties of 5th (the last) variety changing period “Ekada 70” and “Simbirtsit” are more resistant to leaf rust and powdery mildew. The varieties “Zemlyachka”, “Ekada 70” and “Simbirtsit” are resistant to covered smut. Breeding of varieties` resistance to dust-brand appeared to be more problematic. variety “Volzhanka” revealed the stronger resistance to the pathogen.