Does Background Odor in Tea Gardens Mask Attractants? Screening and Application of Attractants for Empoasca onukii Matsuda

文献类型： 外文期刊

第一作者： Xu, Xiuxiu

作者： Xu, Xiuxiu;Cai, Xiaoming;Bian, Lei;Luo, Zongxiu;Li, Zhaoqun;Chen, Zongmao;Xu, Xiuxiu

作者机构：

关键词： Empoasca onukii;plant volatile;attractant;background odor

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

ISSN： 0022-0493

年卷期： 2017 年 110 卷 6 期

页码：

收录情况： SCI

摘要： Plant volatiles help herbivores to locate their hosts, and therefore, they could be used to help develop pesticidefree pest management strategies. To develop an attractant for tea leafhopper (Empoasca onukii), we screened nine tea plant volatile compounds for their attractiveness using Y-tube olfactometer assays. Results indicated that tea leafhoppers significantly preferred ocimene, limonene, (Z)-3-hexenol, and (Z)-3-hexenyl acetate over clean air. These compounds were combined in a blend which lost its attractiveness at concentrations below 10(-2) g/ml in liquid paraffin. In field tests, the blend was attractive to leafhoppers only in autumn, but not in summer. Analyses of the tea field background odor showed that all four components of the blend were present at much higher concentrations in summer (0.05-0.001 ng/liter) than in autumn (similar to 10-to 25-fold lower). In field Y-tube bioassays, compared with the tea field background odor, the blend was attractive at a concentration of 10(-1) g/ml in liquid paraffin, but not at 10(-2) g/ml. These results suggest that field background odor can disrupt the attractiveness of an attractant based on plant volatiles to herbivores.

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