Studying of Cultural Properties of Pyricularia oryzae Cav. Strains in the South of Russia

This article presents the results of development a methodology for describing main morphological and cultural traits Pyricularia oryzae Cav. strains widespread in south Russia. At same time, types are identified listed, which make it possible to unambiguously determine uniqueness variety pathogen. The relationships patterns established using cluster statistical analysis identify conditions pathogen that its predominant forms. Thus, research shows leaf forms P. isolated from rice plants with form blast disease have an equally directional growth pattern colony felt structure, neck-affected plant often produce zone clumpy structure. classification will obtain scientifically grounded comparable data can be used interaction on various varieties agro-technological order improve rationalize agricultural activities. study opens up possibility breeding, making infect certain varieties.