Race evolution of Pyricularia grisea and resistance analysis of partial major varieties in Wenzhou's rice region
Du XinFa; Xu Jing; Lin ZaiQing; Tao RongXiang; Sun ShuYuan
Chinese Journal of Rice Science 10(2): 110-114
Single-spore isolates were established from 481 collections of rice blast (P. grisea) from 55 cultivars grown in 11 counties of Wenzhou, Zhejiang Province, during 1991-93. When the 354 isolates were assessed on 7 Chinese differentials, 7 groups and 23 races were distinguished. Group ZB predominated (80.23% of the isolates) and the predominant races were ZB1, ZB9 and ZB13. Frequencies differed from those in a similar survey during 1981-84.