Journal of Integrative Agriculture ›› 2017, Vol. 16 ›› Issue (11): 2525-2533.DOI: 10.1016/S2095-3119(17)61658-7

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  • 收稿日期:2017-01-23 出版日期:2017-11-20 发布日期:2017-11-03

Electrophysiological responses of the rice striped stem borer Chilo suppressalis to volatiles of the trap plant vetiver grass (Vetiveria zizanioides L.)

LU Yan-hui, LIU Kai, ZHENG Xu-song, LÜ Zhong-xian   

  1. State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, P.R.China
  • Received:2017-01-23 Online:2017-11-20 Published:2017-11-03
  • Contact: Correspondence Lü Zhong-xian, Tel: +86-571-86404077, Fax: +86-571-86404255, E-mail: luzxmh@163.com
  • About author:LU Yan-hui, E-mail: luyanhui4321@126.com
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (31672050), the National Key Research and Development Program of China (2016YFD0200800-04), and the Zhejiang Key Research and Development Program, China (2015C02014).

Abstract: Vetiver grass (Vetiveria zizanioides L.) was previously found to effectively attract female adults of Chilo suppressalis (Walker), an important pest of rice.  To determine the volatile compounds involved in this attraction, electroantennography (EAG) responses to seven synthetic volatiles released from vetiver plants were examined.  Our results indicated that the responses of C. suppressalis adult antennae to the different compounds varied widely.  The compounds elicited strong EAG responses in female antennae were subsequently selected for further EAG response tests, namely, caryophyllene, β-ocimene, linalool and α-pinene.   EAG responses to a combination of these four compounds did not differ significantly from the individual compounds.  However, pair combination tests indicated that 0.01 μg μL–1 linalool and 50 μg μL–1 α-pinene, 50 μg μL–1 caryophyllene and 0.01 μg μL–1 linalool, 0.01 μg μL–1 β-ocimene and 0.01 μg μL–1 linalool, and 0.01 μg μL–1 β-ocimene and 50 μg μL–1 caryophyllene elicited significantly greater EAG responses in 3-day female moths compared to the 1-day female.  These compound combinations and the corresponding ratios are probably playing an important role in attracting female adults of C. suppressalis to the vetiver grass.  

Key words: Chilo suppressalis ,  electroantennography (EAG) ,  volatiles ,  vetiver grass ,  trapping mechanism ,  attraction