摘要
与供试白僵菌菌株相比，某些绿僵菌菌株具有较强的耐高温和耐旱能力。经室内毒力测定，８个绿僵菌菌株中有２个菌株（Ｍ２和Ｍ４）对马尾松毛虫有毒力，其中Ｍ４的毒力与白僵菌相当，其致死中量为４．７５×１０７个孢子·Ｌ－１，致死中时为６．１９～１２．２０ｄ（在１．０×１０１１～１．０×１０７个孢子·Ｌ－１的浓度下）。
The results showed that some strains of Metarhizium spp.were more tolerant to high temperature and drought than Beauveria bassiana.Of 8 strains of Metarhizium spp.,2 strains (M 2,M 4)showed pathogenicity to 3rd～4th instar larvae of Dendrolimus punctatus in laboratory.The LD 50 of M 4 strain was 4 75×10 7 spores·L -1 ,and the LT 50 6 19～12 20 dats for the concentration of 1 0×10 7～1 0×10 11 spores·L -1 .The laboratory test indicated that the toxioity of M 4 strain was almost the same with that of B.bassiana,and that some strains of Metarhizium spp.had great value in controlling D.punctatus.
出处
《浙江林学院学报》
CSCD
1997年第2期165-168,共4页
Journal of Zhejiang Forestry College
关键词
绿僵菌
白僵菌
马尾松毛虫
毒力测定
Metarhizium spp.
Beauveria bassiana
Dendrolimus punctatus
toxicity test
germination
