作　　者： ; ;

机构地区： 河南农业大学

出　　处： 《华北农学报》 1992年第3期76-80,共5页

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F_1的抗性接近双亲的平均值,F_2较F_1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。 The Inheritance of resistance to Green Leaf Blight (GLB) caused by Pythium sp. was studied. The results were as follows-The resistance to GLB appeared to have the character of quantitative inheritance which was controlled mainly by additive gene effects. In different generations, the resistance of Fj was similar to the mean level of its parents. But F2 was more susceptable than F1 The reactions of their bac-kcross 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.

关 键 词： 玉米 青枯病 腐霉菌 抗病性 遗传

领　　域： [农业科学] [农业科学]