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Chinese Journal of Applied Ecology ›› 1998, Vol. 9 ›› Issue (2): 128-132.

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Effect of vanillin on the growth of Chinese fir (Cunninghamia lanceolata) seedlings

Ma Yueqiang1, Liao Liping1, Yang Yuejun1, Wang Silong1, Gao Hong1, Chen Chuying1   

  1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015
  • Received:1997-03-19 Revised:1997-07-21 Online:1998-03-25 Published:1998-03-25

Abstract: The hydroponic study on the effect of different concentrations of vanillin on the growth of Chinese fir seedlings showed that 1mg·kg-1 of vanillin significantly inhibited the radicle growth of seeds, reached only 70% of the control; at concentration of 10mg·kg-1, the total chlorophyll amount was decreased to 80%; when the concentration was above 20mg·kg-1, the growth of height and diameter at ground layer was inhibited; above 50mg·kg-1, the growth of branches and leaves of above-ground part as well as of the canopy was significantly affected; and above 100mg·kg-1, the growth of whole Chinese-fir seedling was significantly inhibited. It is suggested that vanillin is a kind of more poisonous allelopathic chemicals accumulated in soils continuously planted with Chinese fir, and is one of the important causes making a low survival rate of Chinese-fir seedlings.

Key words: Vanillin, Chinese-fir, Seedlings, Toxicity, genetic structure, genetic diversity, COI gene, South China, Hemibarbus medius, ND5 gene, Hemibarbus labeo