The result indicated that relativity of ratio of restiain growth of radicel, embryo of maize and incidence of maize seedling blight was high.Index of relativity were 0.925, 0.919.

• 结果表明，串珠镰刀菌毒素对玉米胚根、胚芽生长抑制率与玉米苗枯病田间发病率相关性较高，相关系数分别为0.；925、0