摘要
经室内侵染力测定,球孢白僵菌Beauveria bassiana和金龟子绿僵菌Metarhizium anisopliae皆能侵染雷公藤丽长角巢蛾Xyrosaria lichneuta幼虫,不同菌株的侵染力存在显著差异。3株白僵菌中,Bb27菌株毒力最强,菌液为1×10~5～1×10~9个·mL^(-1)五个不同浓度梯度的孢子悬浮液时,害虫15 d校正死亡率在58.3%～100%之间;LT_(50)分别为9.36 d、6.26 d、3.89d、2.54 d、2.10 d;LC_(50)为4.87×10~4个·mL^(-1)3株绿僵菌中,MaZPTP01菌株毒力最强,5种孢子浓度15 d校正死亡率分别为52.4%、69.0%、76.2、92.9%、95.2%;LT_(50)分别为11.47 d、6.89 d、4.36 d、2.68 d、2.13 d;LC_(50)为7.39×10~4个·mL^(-1)。Bb27和MaZPTP01菌株可应用于林间作进一步防治试验。
Control effects of Beauveria bassiana and Metarhizium anisopliae to the larvae of Xyrosaria lichneuta were tested in laboratory, and all showed pathogenicity to Xyrosaria lichneuta Meyrick of Tripterygium wilfordii larvae. The data indicated that there were significantly difference at the toxicity to larve of Xyrosaria lichneuta Meyrick. Bb27 caused the greatest mortality in 3 strains of Beau- veria bassiana. The revised mortality rate of 5 strains of spores cancentration among 15 days were 58.3% ,73.8% ,85.7% ,96.0%, 100% ,and the LTs0 were 9. 36 days,6.26 days,3. 89 days,2. 54 days,2. 10 days,and the LCs0 was 4. 87 × 10^4 spores · mL^-1. MaZPTP01 caused the greatest mortality in 3 strains of Metarhizium anisopliae. The revised mortality rate of 5 strains of spores concentration among 15 days were 52. 4%, 69.0%, 76. 2%, 92. 9%, 95.2%, and the LT50 were 11.47 days, 6. 89 days, 4. 36 days, 2. 68 days,2. 13 days,and the LC50 was 7. 39 × 10^4 spores · mL^-1. The result showed that Bb27 and MaZPTP01 could control this pest in the field.
出处
《生物安全学报》
2009年第2期118-123,共6页
Journal of biosafety
基金
福建省三明科技计划项目(2007-L-16)
"福建省森林培育与林产品加工重点实验室"资助
关键词
白僵菌
绿僵菌
丽长角巢蛾
侵染力
雷公藤
Beauveria bassiama
Metarhizium anisopliae
Xyrosaria lichneuta
infection
Tripterygium wilfordii
