在玉米粗缩病大发生年，观察品种、自交系及育种材料的发病率表明，品种间抗病性差异显著。对１８５份自交系抗病鉴定表明不同种质材料的选系抗病性差异悬殊。对６个亲本自交系双列杂交的９个杂交种抗病性分析结果，亲本对后代有一定遗传力，各亲本自交系的一般配合力效应差异显著。 In the year of maize crude disease, the incidence of observed varieties, inbred lines and breeding materials showed that there was significant difference in disease resistance among cultivars. The resistance evaluation of 185 inbred lines showed that there was great disparity in the disease resistance of different germplasm lines. The results of disease resistance analysis showed that the parents had some heritability for the offspring, and the general combining ability effect of each parental inbred line was significant.