Sixty-eight first single-zoospore colonies, generated from seven Phytophthora sojae isolates, were inoculatied on wounded soybean hypocotyle to evaluated their virulence.

• 摘要采用大豆幼苗下胚轴伤口接种法测定了7个大豆疫霉菌的68个1代单游动孢株的毒力，并对其中45个1代单游动孢株毒力进行聚类分析。