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在研究甘薯黑斑病的同时,测定了黑斑病菌的寄主范围。初步桔果如下: 一、供试材料:豌豆、四季豆、绿豆、豇豆、长豇豆、花生、玉米、小麦。 二、研究方法:将各材料种子分别用培养皿和花盆(培养皿中铺脱脂棉代替吸水纸,花盆中的土壤为沙土)发芽,待培养皿中的幼芽长到一寸,花盆里的幼芽露土时,挑取甘薯黑斑病菌的子囊孢子,用伤口接种法接种于白色部分。观察是否寄生,如能寄生则取其上的子囊孢子接种于甘薯块根上,观察其致病与发展情况。
In the meantime, the host range of Alternanthera philoxeroides was determined. Preliminary results are as follows: First, the test materials: peas, green beans, mung beans, cowpea, asparagus beans, peanuts, corn, wheat. Second, the research methods: The material seeds were petri dishes and flower pots (Petri dishes in place of absorbent cotton instead of absorbent paper, the soil in the pots as sand) to germinate until the Petri dishes grow to inch in size, pots Of young shoots exposed to the soil, picked sweet ascospores of Alternaria solani, inoculated with a wound inoculation in the white part. Observe whether parasitism, if the parasitism is to take the ascospores on the sweet potato tubers were inoculated to observe its pathogenicity and development.