【摘要】 采用凹玻片悬滴法测定了温度、湿度、紫外照射及化学农药对玫烟色拟青霉孢子萌发的影响。结果表明,玫烟色拟青霉孢子萌发的适宜温区为20￣28℃,相对湿度在90%以上,紫外照射对该菌孢子萌发有很大影响。随紫外照射时间的延长,孢子萌发率明显降低。当照射时间为60min时,24h的孢子萌发率为54.2%,当照射时间达180min后,24h的孢子萌发率仅为5.4%,同时部分孢子的萌发时间显著被延长。不同杀虫剂及同一杀虫剂的不同浓度,对玫烟色拟青霉分生孢子萌发的影响不同。20%氰戊菊酯、22%蚜虱灵、5%的抑太保、25%灭幼脲四种供试农药的三种浓度对玫烟色拟青霉分生孢子萌发的影响均很小,因此这四种杀虫剂可作为玫烟色拟青霉混用的首选药剂;此外10%吡虫啉和绿荣的1/2常规浓度和1/4常规浓度对该菌分生孢子萌发的影响也较小,因此也可作为玫烟色拟青霉的复配药剂。更多还原

【Abstract】 The conidia germination of Paecilomyces fumosoroseus was investigated using suspended in slide glass.The results showed that the favourable temperature was 20~28℃ and the favourable RH was above 90%.The effects of the UV on germination of P.fumosoroseus increased with the increasing UV exposuring time.The germination rate was 54.2% in 24h exposured 60min,while the germination rate was 5.4% exposured 180min.In addition,the germination was inhibited by tested insecticides of degree.Four insecticides,including 20% fenvaverate,22%yashiling,5% chlorfluazuron,25%dimillin exhibited high compatibility with P.fumosoroseus conidia,so they were ideal insecticides for combining.The other two insecticides,10% imidacloprid and lvrong(the 1/2 and 1/4 applying concentration),had smaller effect for germination,so they can combined with P.fumosoroseus更多还原