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甜瓜疫霉病(phytophthora melonis katsura)是新疆甜瓜栽培的主要病害。为了培育抗甜瓜疫霉病的新品种,搜集了国内外甜瓜品种材料,对其进行了抗疫霉病的研究。鉴定用的疫霉菌是在新疆乌鲁木齐西郊采集的P81—4菌株,在甜瓜幼苗两片子叶展平,第一片真叶露尖时土壤接菌。1987年共鉴定了49个品种和一批杂种一代材料。经鉴定的品种中有两个表现高抗,5个表现中抗,18个表现轻抗,24个表现感病。新疆厚皮甜瓜除一个新品种表现中抗外,其余均表现为轻抗或感病。从杂种一代植株的抗性看,甜瓜品种对疫霉病的抗性表现为显性。
Phytophthora melonis katsura is the main disease of muskmelon cultivation in Xinjiang. In order to cultivate new varieties resistant to Phytophthora melon, melon variety materials at home and abroad were collected and studied against Phytophthora infestans. Identification of Phytophthora Pili strains collected in the western suburbs of Urumqi, Xinjiang, two cotyledons in melon seedling flattening, the first true leaf tip exposed to soil when the bacteria. In 1987 a total of 49 varieties and a number of hybrid generation identified material. Two of the identified cultivars showed high resistance, 5 showed moderate resistance, 18 showed mild resistance, and 24 showed susceptibility. Xinjiang muskmelon addition to a new breed of resistance in the performance of the rest are shown as light resistance or flu. From the hybrid generation of plant resistance, melon varieties showed resistance to Phytophthora dominance.