Effects of Single and Combinative Pollutions of Lead, Cadmium and Chromium on the Germination of Brassica chinensis L

Abstract

Abstract: Germiantion of Brassica 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 Brassica chinensis was enhanced with Pb addition. The toxicity of Cr and Pb was reduced due to precipitation of Cr₂O₇^2- and Pb²⁺ . The toxicity of Cd to plant decreased when Cr⁶⁺ was added.

Key words: depression between karst hills, land use pattern., soil microbe, environment

Ren Anzhi, Gao Yubao. Effects of Single and Combinative Pollutions of Lead, Cadmium and Chromium on the Germination of Brassica chinensis L[J]. cje, 2000, (1): 19-22.

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Effects of Single and Combinative Pollutions of Lead, Cadmium and Chromium on the Germination of Brassica chinensis L

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