不同玉米自交系对大斑病和灰斑病抗性分析

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。

Resistance Analysis on the Northern Leaf Blight and the Gray Leaf Spot of the Corn Inbred Lines

By 10 commonly used corn inbred lines in Northeast China, the resistance of the northern leaf blight and the gray leaf spot were analyzed. The results showed that the different corn inbred lines on the northern leaf blight and corn gray leaf spot had certain difference. The resisting diseases inbred lines to the northern leaf blight include Ji 853, Chang 7-2, Si287 and Si444. The resisting diseases inbred lines to the gray leaf spot of leaf blight include Dan988. View from the time of occurrence, both in corn occurred after heading stage, control more difficult.