In the experiment 11 different genotypes in Cms Rb(Bb),Cms C,Cms Es and normal cytoplasms were used,field test was combined with laboratory test,and the seven pathological traits such as the mortality rate of root cap cell,the lesion area and length,etc.

• 试验选用11套同核异质材料，采用田间鉴定与室内鉴定相结合的方法，依据寄主细胞、组织、个体、群体对CI小种的不同反映，分别对HMCI毒素对玉米根冠细胞致死率、针刺病斑长度、幼根生长抑制率、乳熟期病斑长度和面积、接种20d及乳熟期病情指数7个病理指标进行了比较研究与筛选。