摘要
粉拟青霉南北株系（Ｓ－Ｐｆ和Ｎ－Ｐｆ）、白僵菌（Ｂｂ）在２５℃下于水滴中的孢子萌发率分别为７９．８％、６７．２％和７８．４％，而当相对湿度为９０％以下时，孢子萌发率急剧下降．白僵菌孢子萌发率最适温度为２５℃，粉拟青霉均为２０℃；１５℃以上，Ｓ－Ｐｆ孢子萌发率高于Ｎ－Ｐｆ，而１５℃以下时则相反．在ＰＤＡ培养基上，粉拟青霉南北株系产孢量基本相同；Ｎ－Ｐｆ最适生长温度、产孢温度为２０～２５℃；Ｓ－Ｐｆ则为２０℃．在２０℃以上，白僵菌对马尾松尾虫感染率高于粉拟青霉；而在１５℃以下，粉拟青霉则明显高于白僵菌．
In order to make use of Paecilompes farinonsus to control Denrolimus punctates,a comparison has been made in physiology and pathogenicity between B. bassiana and P.farinosus and between S-pf and N-Pf Strain. It turned out that the germination percentage of conidis of S-Pf,N-Pf and Bb in water bel ow 25℃ was 79.8%, 67.2% and 78.4% respectively, that they were decreased strikingly when RH was below 90%, that the best temperature for conidia germination of Bb and Pf was 25℃ and 20℃ respectively and the best tempera ture for growth and conida production of S-Pf was 20-25℃ and 20℃ for N-Pf, and that the infection of Bb on D.punctatus was higher than that of Pf at a temperature above 20℃ and lower at atemperature below 15℃.
出处
《福建林学院学报》
CSCD
1994年第3期225-228,共4页
Journal of Fujian College of Forestry
关键词
白僵菌
粉拟青霉
马尾松毛虫
Beanveria bassiana
Paecilomyces farinosus
physiology
pathogenicity
