23株白僵菌菌株生物学特性的研究

Studies of 23 Beauveria bassiana Strain Biological Characteristics

在PDA与虫粉-蛋白胨2种培养基以及1%葡萄糖+7%麦皮滤液中,对23株白僵菌菌株的菌落形态、菌丝生长、产孢量以及在不同温度、湿度下的孢子萌发率、抗紫外线能力等方面进行了试验。结果表明:菌落形态可分为3种类型;在2种培养基上,同一菌株及不同菌株在不同培养基上的产孢量也有差异,菌丝徒长的产孢量低;不同温度、湿度下,不同菌株分生孢子萌发率有明显差异。与其它菌株相比,Bpp、Be2、Bd5、Bbt1、Bpx2、Bpr3菌株萌发率高,表现出较好的耐高温和抗旱性以及抗紫外线能力。

The results showed that the colonial forms could be divided into 3 types; the differences between the spore-bearing yields of same strains and between those of different strains existed on 2 different culture mediums, the spore-bearing yields of strains with long hypha were low; there were evident differences between the conidial bourgeon rates of different strains. The bourgeon rates of Bpp, Be2, Bd5, Bbt1, Bpx2, Bpr3 strains were high as compared with other strains, the strains showed relatively good high-temperature-resistant, drought-resistant, and ultraviolet- radiation-resistant capacities.