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

Abstract

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

Ma Yueqiang, Liao Liping, Yang Yuejun, Wang Silong, Gao Hong, Chen Chuying . Effect of vanillin on the growth of Chinese fir (Cunninghamia lanceolata) seedlings[J]. Chinese Journal of Applied Ecology, 1998, 9(2): 128-132.

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