The volatile compositions of Chinese Pine (Pinus tabulaeformis) are analyzed. The main turpentine volatiles are (R)-(+)-α-pinene, (S)-(-)-β-pinene, (S)-(+)-3-carene (the largest) which occupy more than 97% of the to...
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The volatile compositions of Chinese Pine (Pinus tabulaeformis) are analyzed. The main turpentine volatiles are (R)-(+)-α-pinene, (S)-(-)-β-pinene, (S)-(+)-3-carene (the largest) which occupy more than 97% of the total. There are also myrcene, (+)-limonene, camphene, terpinen and phellandrene. In the experiment of Electroantennograms(EAG), the male of red turpentine beetles are sensitive to (S)-(-)-α-pinene、limonene and (S)-(+)-3-carene; while the female of the red turpentine beetles are sensitive to (S)-(+)-3-carene、limonene、(S)-(-)-α-pinene and myrcene. The female are more sensitive to the volatiles than the male. There is much difference in response of Dendroctonus valens in Chinese pine compared to that in USA in ponderosa pine. The volatile difference of the two pine species and the environment condition may contribute to this change. Further study on the mechanism of the change is needed.
This paper reported the biological activities of five synthetic philanthotoxin *** under laboratory condition indicated a certain level of activity on poisoning and inhibiting emergence *** LC50 of compound 1 on Ectro...
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This paper reported the biological activities of five synthetic philanthotoxin *** under laboratory condition indicated a certain level of activity on poisoning and inhibiting emergence *** LC50 of compound 1 on Ectropis obliqua was 8.987×103 mg·*** the 8×103 mg·L-1 dosage of compound 1,the adjustment rate of pupation and emergence of *** was 52.44% and 89.81% *** compound 2 had a certain effect on the larval and pupal weight.
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