In addition, we detected the pathogenicity of the toxin to one set of rice materials with homocaryon using the method of root cap cells bioassay. The experiment confirms that 90 2 strain is special susceptibility to rice with W CMS.

• 用根冠细胞法测定了90－2菌株毒素对一套4种同核异质CMS材料的致病力，表明稻瘟病菌90－2菌株是CMS野败型的专化生理小种。