Identification on phytophthora blight resistance in major cultivars of pepper in Guizhou province.

Pouring sporangia in roil was used to screen good variety resistant to phytophthora blight among 21 pepper cultivars. The results showed that Bijiexianjiao, Leishanzhaotianjiao, Zunyichaotianjiao were highly resistant. There were 7 resistant varieties, 6 middle-resistant varieties and 5 susceptible varieties. The ratio was 14.3 %, 33.3 %, 28.6 %, 23.8 %, respectively. The results of 7 peppers identified resistance to pepper phytophthora blight in field showed that series of Xiangyan varieties were highly susceptible, and local varieties such as Zunyichaotianjiao, Xiangla-1 and Suiyanglajiao had better resistance, especially dried pepper varieties.