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Germiantion of Bra.s.sica chinensis L. grown in the solution with different concentrations of lead, cadmium and chromium (single and combinative) was investigated. Root lengths decreased with the increase of lead, cadmium and chromium in hydroponic solution. The physiological toxicity order for these three ions was Cr6+>Cd2+>Pb2 +. The uptake of Pb by Bras.sica chinensis was enhanced with Pb addition. The toxicity of Cr and Pb was reduced due to precipitation of Cr2O72- and Pb2+ .The toxicity of Cd to plant decreased when Cr6+ was added.

作者:任安芝;高玉葆

来源:生态学杂志 2000 年 19卷 1期

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作者:
任安芝;高玉葆
来源:
生态学杂志 2000 年 19卷 1期
标签:
lead cadmium chromium Brassica chinensis L. EC50
Germiantion of Bra.s.sica chinensis L. grown in the solution with different concentrations of lead, cadmium and chromium (single and combinative) was investigated. Root lengths decreased with the increase of lead, cadmium and chromium in hydroponic solution. The physiological toxicity order for these three ions was Cr6+>Cd2+>Pb2 +. The uptake of Pb by Bras.sica chinensis was enhanced with Pb addition. The toxicity of Cr and Pb was reduced due to precipitation of Cr2O72- and Pb2+ .The toxicity of Cd to plant decreased when Cr6+ was added.