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秦天才,吴玉树,王焕校.镉、铅及其相互作用对小白菜生理生化特性的影响.生态学报,1994,14(1):46~50 本文二维码信息
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镉、铅及其相互作用对小白菜生理生化特性的影响
EFFECT OF CADMIUM,LEAD AND THEIR INTERACTIONS ON THE PHYSIOLOGICAL AND BIOCHEMICAL CHARACTERISTICS OF BRASSICA CHINENSIS
投稿时间:1992-04-19  修订日期:1992-10-27
DOI:
关键词    小白菜  生理生化指标。  
Key Wordscadmium  lead  Brassica chinensis  physiological and biochemical indicators.  
基金项目
作者单位
秦天才 华中农业大学 
吴玉树 云南大学 
王焕校 云南大学 
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摘要:
本文研究了溶液培养条件下小白菜对镉、铅的吸收积累规律和镉、铅及其相互作用对小白菜生理生化特性的影响。结果表明:植物体内镉、铅含量与培养液中镉、铅浓度呈正相关性,镉可降低植物对铅的吸收;镉超过一定浓度后,对叶绿素起破坏作用,并促进抗坏血酸分解,使游离脯氨酸积累,抑制硝酸还原酶活性。含镉的培养液中,由于铅的加入,加强了镉对植物的毒害作用。
Abstract:
In the present paper indicated was the up take and accumulation of Cd and Pb by Brassi-ca chinensis grown in hydroponic culture,and the effect of Cd and Pb and their interactions onthe physiological and biochemical characteristics of Brassica chinensis. The experimental re-sults showed that Cd and Pb contents in plant was in positive correlation with the concentra-tions of Cd and Pb.The uptake of Pb by Brassica chinensis was inhibited by Cd.Cd, beyond acertain concentration,led to a reduction in chlorophyll ...
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