玉米尾孢菌叶斑病及其抗性育种研究现状

Maize Cercospora Leaf Spot Disease and Its Resistance Breeding

玉米尾孢菌叶斑病是由玉蜀黍尾孢菌(Cercospora zeae-maydis Tehon﹠Daniels)引起的真菌性病害,近年来已成为危害我国玉米生产的一个主要病害。为此,综述了玉米尾孢菌叶斑病的症状、发生规律以及病原菌特征,并对该病害的综合防治措施进行了分析,提出选育和推广抗病品种是最为有效的途径。在我国玉米种质资源中,PA类群的自交系大多对尾孢菌叶斑病表现感病,而PB类群的自交系则表现抗病。在今后的玉米育种工作中,应加强对玉米尾孢菌叶斑病抗性基因种质的创新研究以及挖掘利用。

Maize cercospora leaf spot disease,caused by Cercospora zeae-maydis Tehon﹠Da-niels,has recently become a major disease in maize production in China.Based on its symptoms and occurrence and the characteristics of the pathogenic fungus,integrated control measures were proposed,of which breeding and promotion of disease-resistant varieties was considered the most effective way.Of maize germplasm in China,PA group germplasm was not resistant to maize cercospora leaf spot disease,while PB group germplasm was.Maize breeding in the future work should strengthen innovative research and exploration of maize germplasm with resistance genes to cercospora leaf spot disease.