The diseases Secale cereale L. in Kirov region and genetic sources of sustainability for winter rye selection

The purpose of the study was the search for genetic sources of resistance of winter rye to the main diseases in Kirov Region. In terms of provocative infectious background of snow mold pathogens, powdery mildew, leaf and stem rust, root rot and ergot in FSBRI FARC of the North-East in 2018-2019 30 the populations and cultivars of winter rye breeding FARC the North-East and 50 samples from world collection of VIR were studied. Among the samples of the Institute complex resistance to snow mold, leaf and stem rust have: Vyatka 2, Kirovskaya 89, Flora, Rumba; to snow mold, powdery mildew and root rots - Rada; to snow mold, powdery mildew and brown rust - Triumph; to snow mold, stem rust and root rots - Harmony; to powdery mildew and brown rust - Rushnik; to snow mold and powdery mildew - Graphite; to snow mold and ergot - Leda and the Symphony. Complex stability was shown by collection samples: Trinodis 4 - Minvak-139/09 NP - resistance to snow mold, powdery mildew, brown rust and ergot; Rossiyanka 2, Volzhanka 2, Yantarnaya NP, Novaya Era NP, Krasnoyarskaya universalnaya NP - to snow mold, powdery mildew and ergot; Chulpan 4 and Talovskaya 2 - snow mold, brown rust and ergot; Chulysh and Zarechanskaya 3 - to powdery mildew and brown rust; Chulpan 2 - to powdery mildew and ergot; Podarok NP - to snow mold, and ergot. It was discovered that low pentasan varieties had been much less than high pentasan affected by ergot and snow mold. On average, the groups of the samples regrowth of plants after the defeat of the snow mold from low pentasan samples was 2.4 times higher, and the crops defeatedby ergot- 2 times the grain mass contamination with ergot sclerotia - 4 times.