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选择10个我国北方常用玉米自交系,进行大斑病和灰斑病的抗性分析。结果表明,不同玉米自交系的大斑病和灰斑病存在不同的抗性差异。其中,对大斑病抗病的自交系有吉853、昌7-2、四-287和四-444;对灰斑病抗病的自交系有丹988。从大斑病和灰斑病发生时间看,两者均在玉米抽雄期以后发生,防治较为困难。
Ten common maize inbred lines in northern China were selected for resistance analysis of leaf spot and gray spot. The results showed that different maize inbred lines have different resistances to big spot and gray spot. Among them, the resistant blight resistance inbred lines Kyrgyzstan 853, Chang 7-2, four -287 and four -444; resistance to gray spot disease inbred lines have Dan 988. From the occurrence of maculopathula and gray spot, both occurred after tasseling stage of maize and the control was more difficult.