文献类型： 外文期刊

作者： Bian, L. ¹ ; Sun, X. L. ¹ ; Cai, X. M. ² ; Chen, Z. M. ¹ ;

作者机构： 1.Chinese Acad Agr Sci, Tea Res Inst, Minist Agr, Key Lab Tea Biol & Resource Utilizat, Hangzhou 310008, Zhejiang, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Qual & Standard Agr Prod, Minist Agr, Key Lab Pesticide Residue Detect, Hangzhou 310021, Zhejiang, Peoples R China

关键词： zNose;plant volatile;slow release;sol-gel;Aphididae

期刊名称：JOURNAL OF ECONOMIC ENTOMOLOGY （ 影响因子：2.381； 五年影响因子：2.568 ）

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收录情况： SCI

摘要： The black citrus aphid, also known as the tea aphid, (Toxoptera aurantii Boyer) attacks economically important crops, including tea (Camellia sinensis (L.) O. Kuntze). In the current study, silica sol-gel formulations were screened to find one that could carry and release C. sinensis plant volatiles to lure black citrus aphids in a greenhouse. The common plant volatile trans-2-hexen-1-al was used as a model molecule to screen for suitable sol-gel formulations. A zNose (Electronic Sensor Technology, Newbury Park, CA) transportable gas chromatograph was used to continuously monitor the volatile emissions. A sol-gel formulation containing tetramethyl orthosilicate and methyltrimethoxysilane in an 8:2 (vol:vol) ratio was selected to develop a slow-release dispenser. The half-life of trans-2-hexen-1-al in the sol-gel dispenser increased slightly with the volume of this compound in the dispenser. Ten different volatiles were tested in the sol-gel dispenser. Alcohols of 6-10 carbons had the longest half-lives (3.01-3.77 d), while esters of 6-12 carbons had the shortest (1.53-2.28 d). Release of these volatiles from the dispensers could not be detected by the zNose after 16 d (cis-3-hexenyl acetate) to 26 d (3,7-dimethylocta-1,6-dien-3-ol). In greenhouse experiments, trans-2-hexen-1-al and cis-3-hexen-1-ol released from the sol-gel dispensers attracted aphids for approximate to 17 d, and release of these volatiles could not be detected by the zNose after approximate to 24 d. The sol-gel dispensers performed adequately for the slow release of plant volatiles to trap aphids in the greenhouse.