The cercospora leaf spot is one of the main diseases infecting sugarbeet.褐斑病是甜菜的主要病害之一,危害性很大.The results show that the Heihe region Cercospora Race greater the number and frequency changes.结果表明黑河地区灰斑病生理小种数目和频率有较大变化....

尾孢属...

Cercospora的音标：...