Analysis on Relationship between Physiological Races of Pyricularia grisea and Rice Variety in Luzhou and Qianjiang Rice Region
The result indicated that the rice populations were different and the important races had some differences in 2 rice regions of Luzhou and Qianjiang, but dominance population(ZB) was same and 30% physiological races were same.
Abstract
The diseased samples of Pyriculara grisea,collected from 9 varieties in 11 rice regions of counties in Luzhou and Qianjiang regions were isolated and cultured,and then were inoculated on the 7 hybrid rice that used in distinguishing the rice blast in unification in China for investigation of physiological races of Pyricularia grisea.The result indicated that the rice populations were different and the important races had some differences in 2 rice regions of Luzhou and Qianjiang.The important races also had some differences in detected populations of 3 varieties of Xianyou 63,Gangyou 22 and Xianyou 1,but dominance population(ZB) was same and 30% physiological races were same with their appearance frequency reaching 74.43%.