摘要： 对由腐霉菌引起的玉米青枯病的抗性遗传研究结果表明,玉米对青枯病的抗性表现为数量性状遗传,且以加性基因效应为主。杂种F₁的抗性接近双亲的平均值,F₂较F₁的感病程度略有增加。回交后代的病害反应型有向轮回亲本靠近的倾向。在玉米抗青枯病育种中,要重视抗源的筛选和抗性配合力的测定,只有选用高抗玉米青枯病的亲本,才能组配出理想的抗病杂交种。

关键词: 玉米, 青枯病, 腐霉菌, 加性基因效应, 配合力

Abstract: The Inheritance of resistance to Green Leaf Blight (GLB)caused by Pyihiuru sp, was studied, The results were as follows; "1'hc rc:,is!ance to GLB appeared to have the character of quantitative inheritance which was controlled mainly by additive gene effects, In different generations, the resistance of F 1 was similar to the mean level of its parents, But I' Z was more susceptable than F,.The reactions of their backcross progenies to GLB tended to be similar to those of their recurrent parents,Therefore, the screening of resistant sources and the determination of resistance combining ability should be emphasized in the breeding program of Maize GLB resistance,In order to select an ideal hybrid，both parents should be highly resistant.

Key words: Corn, Green Leaf Blight, s Pythium sp, Additive gene effects, Combining ability