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玉蜀黍尾孢菌（Ｇｅｒｃｏｓｐｏｒａｚｅａｅ－ｍａｙｄｉｓ）引起的玉米灰斑病目前已经发展成一重要病害。该病主要发生在温暖、湿润的地区，各玉米品种之间的抗病性存在明显差异，其抗病性主要受附加基因控制国内外都有一些抗病品种，但是多数品种感病。
Corn gray spot caused by corncob (Gercospora zeae-maydis) has now developed into an important disease. The disease mainly occurs in the warm and humid areas. There is a clear difference in the disease resistance between the maize varieties. The disease resistance is mainly controlled by the additional genes. There are some resistant varieties both at home and abroad, but most of the varieties are susceptible to the disease.