玉米圆斑病是我省目前大面积推广的吉单101杂交种亲本‘吉63’自交系果穗上发生的严重病害,它影响‘吉63’自交系的繁育和制种工作。1959年姜广正首次报告玉米上发生圆斑病。戚佩坤等报告吉林省1956年曾发生过圆斑病,严重地块玉米叶片大量枯死。1974年在农安县良种场种植的‘吉63’自交 Corn spot is a serious disease occurred on the ear of ’Ji63’ inbred line, which is widely popularized in our province at present. It affects the breeding and seed production of ’Ji63’ inbred line. In 1959, Jiang Guangzheng first reported a round spot on corn. Qi Peikun and other reports in Jilin Province in 1956 had a round spot, a large number of dead corn leaves a lot. In 1974 in Nong’an County planting ’Ji 63’ self-self