Silicon Induced Inhibitory Effects of Cadmium Uptake by Chinese Cabbage Shoots

Abstract

Abstract: Pot experiment was conducted to investigate the influence of silicon on cadmium uptake by Chinese cabbage shoots grown in an experimentally cadmium contaminated soil.The results showed that the biomass of Chinese cabbage shoots were promoted significantly by adding exogenous silicon 0.5,1.0g/kg. With silicon concentration processed ,the biomass pyramided distinctly.Therefore silicon improved the cadmium stress tolerance of the Chinese cabbage.Silicon increased the soil pH and the content of soil available silicon significantly and effectly lowered the cadmium availability within the exogenous Cd stages 0.6,0.9mg/kg. Accordingly, the inhibitory effects on cadmium uptake and accumulation in Chinese cabbage shoots were prominent grown in the cadmium0.6,0.9mg/kg contaminated soil, with the concentration and the total cadmium decreased significantly compared with the non-silicon cadmium treatment. In conclusion,silicon can effectly alleviate the cadmium toxicity in Chinese cabbage shoots as a amendment at proper levels of 1.0g/kg.

CLC Number:

Chen Cuifang,,, Zhong Jihong, Li Shuyi. Silicon Induced Inhibitory Effects of Cadmium Uptake by Chinese Cabbage Shoots[J]. Chinese Agricultural Science Bulletin, 2007, 23(1): 144-144.

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