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玫烟色拟青霉(Paecilomyces fumosoroseus)B菌株,是1980年自北京郊区温室白粉虱(Trialeu-rodes vaporariorum)成虫上分离到,鉴定为玫烟色拟青霉北京变种(P.fumosoroseus var.beijingensisFang et Q.T.Chen n.var.)。野生菌株保藏到1982年后,菌株的寄生性、生长习性等均减退。但经人工诱变,得到的13—41.、13—21B.、13—48等人工突变株,在寄生性上有极显著的提高;菌落重量增加0.24—1.7倍;产孢量提高0.59—1.3倍。培养特征也有较大的差异。1982年来,在保护地内用诱变菌株混合制剂防治黄瓜上的温室白粉虱,对于减少种群和上层叶成虫数量均有显著的效果。
Paecilomyces fumosoroseus strain B was isolated from adults of Trialeu-rodes vaporariorum in the suburbs of Beijing in 1980 and identified as P.fumosoroseus var. BeijingensisFang et QTChen n.var.). After the strain was stored in the wild in 1982, the parasitism and growth habit of the strains decreased. However, the artificial mutants 13-41., 13-21B., 13-48 and other artificial mutants have a very significant increase in parasitism; the colony weight increased by 0.24-1.7 times; the sporulation amount increased by 0.59- 1.3 times. Cultivation characteristics also have great differences. Since 1982, the use of mutagenic strains in protected areas to prevent and control green house whiteflies on cucumbers has a significant effect on reducing the population of adult and upper lobe adults.