1College of Horticulture,South China Agricultural University,Guangzhou 510642,Guangdong,China；2Seed and Seedling Centre,Guangdong Academy of Agricultural Sciences,Guangzhou 510640,Guangdong,China;3College of Agriculture and Landscape Architecture,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,Guangdong,China
Abstract：The diseases resistances of 10 gourd seedlings to Phytophthora capsici were identified by artificially inoculating zoospore of P.capsici with different concentrations(2×103 spore·mL-1,2×104 spore·mL-1,2×105 spore·mL-1).The results indicated that the different gourd seedlings showed different resistance exhibition to P.capsici.Except for‘Zaoshu No.1’sponge gourd and‘Xinxiu’angular sponge gourd showed immunity to P.capsic,other nine species resistance decreased remarkably along with the increase of inoculating concentration.After inoculating zoospore with 2×104 spore·mL-1 concentration,‘Miben’pumpkin and‘Xinguangyou’chieh-qua showed strong disease resistance;‘Zaoyou’bitter gourd and‘Bifeng’cucumber had moderate resistance;‘Tedaxinhongbao’watermelon,‘Xiumei’green-rid oriental pickling melon,‘Yinhui’melon,‘Taiyou’clavated calabash,‘Jingying No.1’summer squash were highly susceptible.
