The teliospore of Sphacelotheca reiliana emerges promycelium with slowly on PDA media, its small spore(mean range .μm×.玉米丝黑穗病菌（Sphacelothecareiliana）冬孢子在PDA平板上萌发产生先菌丝，生长缓慢，然后以小孢子（平均．μm×．μm）芽殖形成小菌落。