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Virulence of Beauveria bassiana CQBb111 Strain to Diaphorina citri and Neoseiulus cucumeirs
Author(s): 
Pages: 56-60
Year: Issue:  1
Journal: Chinese Journal of Biological Control

Keyword:  白僵菌 柑橘木虱 胡瓜新小绥螨 黄龙病 毒力 联合控制;
Abstract: 本文用球孢白僵菌CQBb111菌株的分生孢子配成不同浓度的悬浮液对柑橘木虱成虫和胡瓜新小绥螨雌成螨的毒性进行了测定。1.0×104孢子.mL 1的悬浮液作用第10 d的柑橘木虱和胡瓜新小绥螨累计校正死亡率分别为92.68%、4.05%,同浓度的孢子悬浮液对柑橘木虱的致死率远高于其对胡瓜新小绥螨的致死率。柑橘木虱和胡瓜新小绥螨第3 d的LC50为2.24×109、5.4×1012孢子.mL 1,同一时间下,对柑橘木虱致死率达50%的悬浮液对胡瓜新小绥螨的影响甚微。浓度为1.0×108孢子.mL 1时,柑橘木虱的LT50为2.88 d,而胡瓜新小绥螨此时校正死亡率仅为10.7%,同浓度的孢子悬浮液对柑橘木虱的LT50远小于胡瓜新小绥螨的LT50。该菌株对柑橘木虱成虫有很好的防治效果而对胡瓜新小绥螨雌成螨影响甚微。因此可以利用胡瓜新小绥螨搭载球孢白僵菌CQBb111菌株的分生孢子联合控制柑橘木虱,以减缓柑橘黄龙病的扩散蔓延。
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