【Objective】 Composition of avirulent genes types of Magnaporthe oryzae in Hunan province were studied, in order to provide reference basis for breeding of new rice cultivars and rational distribution of blast -resistant cultivars. 【Method】A total of 120 M. oryzae monadic isolates were isolated from rice susceptible cultivars (Lijiangxintuanheigu,LTH) in Hunan Taojiang nurseries in 2014. Then, 24 near-isogenic lines (NILs) with known blast-resistance gene was in vitro inoculated artificially with above isolates by acupuncture, and the avirul...
