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《Plant Protection》 2005-06
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Study on the photoactivited toxicity of several plant extracts to Lipaphis erysimi(Kaltenbach)

WAN Shu-qing,ZHENG Da-rui(Key Laboratory of National Education Ministry of Pesticide and Chemical Biology,South China Agricultural University,Guangzhou 510642,China)  
Three plant species were extracted with methanol and petroleum ether by Soxhlet's method and water distillation.The results of photoactivated toxicity of the extracts against Lipaphis erysimi(Kaltenbach) showed that the mortality of the aphids tested was between 60% and 90% using the methanol extract of Phellodendron chinense Schneid seed under the concentration of 1-5mg/mL,without significant difference between light treatment and non-light treatment.However,the extracts of the plants with petroleum ether,at the concentration of 5mg/mL,resulted in a mortality of(34.77%) or 19.22% with or without light treatment,respectively,showing the effects of photoactivation.The essential oil of Artemisia scoparia showed no photoactivated effects on the insects under light at 0.5 mg/mL and 5 mg/mL,while the extract at 1 mg/mL led to a mortality of 83.65% or 24.15% with or without light treatment,respectively,with significant photoactivation.The mortality from the methanol extracts of Tagetes eracta roots at 5 mg/mL with or without light was 23.91% or 9.74%,respectively,showing slight light effects.
【Fund】: 国家自然科学基金(30170097);; 广东省自然科学基金(010319)
【CateGory Index】: S482.3
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