The successive variation of some pathogenicity genes was observed in both two single-zoospore and one single-zoospore progenies, and the inheritance of other pathogenicity genes was stable.

• 控制大豆疫霉菌致病力的某些致病基因在连续2代单游动孢子后代和1代单卵孢后代中发生变异，而其他致病基因遗传稳定。