Repellence and feeding deterrence of Verticillium lecaniitoxic-Ⅷ against Bemisia tabaci
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Key Words：Verticillium lecanii toxic-Ⅷ, dipicollinoc acid,Bemisa tabaci, repellence, feeding deterrence
Abstract： Both the dipicollinoc acid, toxin Ⅷ, produced by the fungus Verticillium lecanii(Zimmermann) Viégas,and an artificially synthesized version of this compound, were effective in repelling Bemisa tabaci(Gennadius) adults. The effectiveness of these compounds was tested using a choice experiment. The results show that both natural and synthetic toxic-Ⅷ had similar deterrence values against B. tabaci of 41 % and 23% respectively.