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...
详细信息
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.
44 isolates of fungi were isolated from the xylem of the Pinus thunbergii samples(healthy stem,weak stem and withered stem)infected by the pine wilt disease caused by pine wood nematode,Bursaphelenchus xylophilus,from...
详细信息
44 isolates of fungi were isolated from the xylem of the Pinus thunbergii samples(healthy stem,weak stem and withered stem)infected by the pine wilt disease caused by pine wood nematode,Bursaphelenchus xylophilus,from infected trees at Zhoushan and Pinghu of Zhejiang Province in China,and these isolates were identified as:Trichoderma spp.,Penicillium spp.,Pestalotia *** identified isolates took 70.62% of total isolates of the *** the 12 isolates unidentified,one sporiferous fungus was found,the other 11 isolates were *** *** the dominant fungus in ***,the total rate was 53.34%,followed by Penicillium spp.,18.89%.
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...
详细信息
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.
暂无评论