Inoculate sporangial suspension with equal A1 and A2 to the leaflet of Mira, obtain oospore cluster, then drill through potato slice to gain the strains of oospore cluster.

• 以A1和A2孢子囊等量混合制成悬浮液,接种于Mira叶片上,获得卵孢子群,经穿薯片培养获得卵孢子群菌系。