【摘要】 自江苏、山东、四川、辽宁、河北及内蒙古等省(自治区)的棉花、茄子、辣根,蚕豆等18种植物上分离的大丽轮枝菌,在温室条件下,测定了对茄子、番茄幼苗的致病力分化。根据接种21天的病株率、30天的病情指数、45天的枯死株率和症状类型,大丽轮枝菌对茄子的致病力强、中、弱划分为Ⅰ、Ⅱ、Ⅲ型;在番茄上测定结果多数菌株不引起侵染,或只是较弱的致病力。更多还原

【Abstract】 Isolates of Verticillium dahliae Kleb. from 18 species of host plants including cotton, eggplant, horseradish, broad bean etc.distributed in Jiangsu, Shandong, Siehuan, Liaonin, Hebei and Inner Mongolia were inoculated on seedlings of eggplant and tomato at room temperature to test their virulence differentiation. Based on rate of diseased plants, disease index, rate of blighted plants at 21, 30, and 45 days after inoculation respectively and due to the symptom types on eggplant, Verticitlium dahliae Kleb. could be classified into three types (Ⅰ, Ⅱ, Ⅲ) with strong, medium and weak virulence on the host. Most. of the isolates could not infect tomato, or otherwise only caused mild symptom.更多还原