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Issue:ISSN 2095-1353
           CN 11-6020/Q
Director:Chinese Academy of Sciences
Sponsored by:Chinese Society of Entomological;institute of zoology, chinese academy of sciences;
Address:Chaoyang District No. 1 Beichen West Road, No. 5 hospital,Beijing City,100101, China
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Your Position :Home->Past Journals Catalog->2009年46 No.2

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Key Words:Pinus tabuliformis, monoterpenes, Dendroctonus valens, electroantennagram, olfactory responses
Abstract:

The volatiles profiles of health, damaged and resistant Chinese pine, Pinus tabuliformis, were surveyed with Super-Q absorbent in headspace absorption method. GC-MS analysis showed that few monoterpenes were detected from health pines, in which α-pinene accounted for more than 97%. After pines were damaged,several kinds of monoterpene were released, includig αpinene, camphene, 3-carene, β-pinene, myrcene, limonene, terpinolene, βphellandrene and longifoleneThe composition of monoterpenes in resistant pines was more complex than damaged pines. ANOVA analysis showed that the relative abundance of αpinene displaying an obvious decreasing in the sequence of health pines > damaged pines > resistant pines. The abundance of 3-carene in damaged pines was higher than that in healthy and resistant pines. The relative content of limonene, camphene and terpinolene in damaged pines increased significantly. The abundance of β-pinene, myrcene and βphellandrene were similar in different pines. Electroantennagram (EAG) and olfactometer were employed to analyze the antennal and behavioral responses of Dendroctuns valens LeConte to the major terpenes in laboratory. It was consistent with the previous field results that (+)-3-carene was the most antennal active and attractive to D. lens. There was no significant difference between (R)-(+)-α-pinene and (S)-(-)-α-pinene in antennal and olfactory sponses
by D. valens. The importance of monoterpenes quantitative differences in hos
t location of D. valens was discussed.

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