RUDN Journal of Agronomy and Animal IndustriesRUDN Journal of Agronomy and Animal Industries2312-797X2312-7988Peoples’ Friendship University of Russia named after Patrice Lumumba134710.22363/2312-797X-2015-2-7-15Research ArticleEvaluation of resistance of head cabbage hybrids to black rot diseaseVo Thi Ngoc Ha-an.ignatov@gmail.comDzhalilovF San.ignatov@gmail.comIgnatovA NDepartment of botany, plant physiology and agrobiotechnology Peoples’ Friendship University of Russia Miklukho-Maklaya str., 8/2, Moscow, Russia, 117198an.ignatov@gmail.comRussian State Agrarian University-MSKhA by TimiryazevFBGUN “Center Bioengineering” RAS15022015271505092016Copyright © 2015,2015The paper presents the results of a comparison of the reaction of commercial hybrids of cabbage infected by different methods and different strains of the black rot pathogen Xanthomonas campestris pv. campestris. The influence of the infection method and strain on progress of pathogen in the plant was evaluated by statistical methods. The qualitative response of hybrids to infection by a number of the pathogen strains of different races was used to build a validated model of gene-for- gene interaction. It is shown that due to change of genetic structure of the pathogen in 2012, were previously resistant hybrids became susceptible to a new population of the pathogen.Xanthomonas campestris pv. campestrisBrassica oleracea LXanthomonas campestris pv. campestrisBrassica oleracea Lresistancerace-specific reactionfactor analysisустойчивостьрасово-специфическая реакцияфакторный анализ