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本文通过对北京地区蜡蚧轮枝菌11个单孢分离菌株的菌落生长、产孢量、分生孢子萌发率以及对温室白粉虱2龄若虫致病性研究比较，结果表明：上述性状特别是产孢量，在11个菌株中均表现有显著差异，但孢子萌发率都较高，达94．01％～9897％（12h）。在同一菌株中这些性状有的表现出一致性，有的则不同。综合比较几种性状，筛选出B3／S1－SUb2和4号两个优良菌株，它们首先具有致病性高（对2龄粉虱若虫的致死率＞95．76％，12d）、其次孢子萌发率高（94．24％和98．42％）、产孢量大（5．06和4．38×109抱子／皿）以及菌落生长速率快（3．13和3．00mm／d）的特性，具有实用价值，可为今后生物制剂的生产提供菌株。
This article through the Beijing area of Verticillium lecanii 11 single-spore isolates of colony growth, sporulation, conidial germination rate and the second-instar whiteworm Green Bugs pathogenicity research, the results show that: the above traits, especially The sporulation quantity showed significant difference in 11 strains, but the spore germination rate was high, reaching 94.01% ~ 9897% (12h). Some of these traits show consistency in the same strain, while others are different. The two strains, B3 / S1-SUb2 and 4, were screened out and their pathogenicity was high (lethal to whitefly nymphs> 95.76%, 12d), followed by spore germination High rates (94.24% and 98.42%), high amount of sporulation (5.06 and 4.38 × 109 spores / dish), and high colony growth rate (3.13 and 3.00 mm / d) Characteristics, has practical value, for the future production of biological agents to provide strains.