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Effects of Different Allelochemicals on Mineral Elements Absorption of Tomato Root |
GENG Guang-dong1,2, ZHANG Su-qin1,2,CHENG Zhi-hui2* |
1College of Agronomy,Guizhou University,Guiyang 550025,Guizhou,China;2College of Horticulture,Northwest A & F University,Yangling 712100,Shaanxi,China |
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Abstract Effects of 1,2-benzenedicarboxylic acid,dibutyl phthalate and diphenylamine on mineral elements absorption of young tomato root system were studied in this paper.The results showed that the absorption of N,P and K were affected by these three allelochemicals.The inhibitive effect of 1,2-benzenedicarboxylic acid on the absorption of N,P and K increased with its concentration rising.Low concentration of dibutyl phthalate increased the absorption of N,but decreased the absorption of P and K.Its high concentration restrained the absorption of N,P and K,while the low concentration of diphenylamine could stimulate the absorption of N and K,but restrain the absorption of P.Generally,the P absorption was mostly affected by these allelochemicals.
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Received: 09 July 2008
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