THE STUDY OF WHITE CABBAGE BRASSICA OLERACEA L. GERMPLASM FOR BLACK ROT RESISTANCE

Rumiantseva Olesya O.  -  master's student at the Institute of Horticulture and Landscape Architecture, Russian State Agrarian University ? MTAA named after K.A. Timiryazev, 127434, Russia, Moscow, Timiryazevskaya Str., 49, rumiantsewa.olesya@yandex.ru

Monakhos Sokrat Grigorievich  -  Doctor of Agricultural Sciences, Associate Professor, Head of the Department of Botany, Breeding and Seed Production of Garden Plants, Russian State Agrarian University - Moscow Agricultural Academy named after K.A. Timiryazeva, Russian Federation, 127555, Moscow, Pryanishnikova st., 6, educational building No. 17, s.monakhos@rgau-msha.ru

The urgency of problem is explained by the fact that black rot is one of the most harmful and widespread diseases of white cabbage. At the same time, there are no highly resistant cabbage varieties and hybrids on the market. Representatives of B.oleracea do not have donors of monogenic dominant resistance to the most common races, therefore, it is necessary to transfer resistance from related Brassica species. This study presents the results of assessing the resistance/susceptibility to blaсk rot of backcross progeny from interspecific hybridization of white cabbage with Ethiopian mustard (B.oleracea ? B.carinata), three resistant to 1, 3 and 4 races genotypes were identified with the number of chromosomes in the meristematic cells of the roots is 2n=19.

Key words: white cabbage, black rot, Xanthomonas campestris pv. campestris, resistance, susceptibility, inoculation