Cd、Pb复合处理下2种离子在植物体内的分布及其对植物生理指标的影响  

Effect under combined treatment of cadmium and lead on their distribution of plants and physiological indications

作　　者：赵菲佚[1] 翟禄新[1] 陈荃[1] 张明泉[2] 曾福礼[2] 

机构地区：[1]天水师范学院生物系,甘肃天水741001 [2]兰州大学环境科学系,兰州730000

出　　处：《西北植物学报》2002年第3期595-601,共7页Acta Botanica Boreali-Occidentalia Sinica

基　　金：甘肃省教委基金资助项目

摘　　要：以黄瓜、小麦为试验材料 ,以 Cd、Pb复合浓度进行处理 ,研究了在不同处理水平下Cd、Pb在 2种植物体内的分布 ,以及 2种植物的叶绿素、脯氨酸含量、乙烯释放量的变化。结果表明 ,Cd、Pb主要累积于植物根部 ,不同复合浓度处理后 ,植物叶片中叶绿素含量下降 ,脯氨酸含量增高 ,乙烯释放量增加 ,并存在峰点。不同的植物及不同的浓度组合有着不同的影响 ,环境中 Cd。Cucumber (Cucumis sativas) and wheat (Triticum aestivum) were treated under the stress with their combined concentration of Cd and Pb.The distribution of Cd,Pb and changes of chlorophyll,ethylene production,free proline contents in plant were studied respectively.The experimental results showed that Cd,Pb mainly was accumulated in root of plant,and the contents of chlorophyll reduced after treatment.Otherwise,the free proline contents and ethylene production of plant raised.The different effects were presented under combined treatment of Cd and Pb.The Cd,Pb hold interactions to effects on physiological indications of different plants under different treatment concentrations.

关 键 词：Cd PB 复合处理 离子 植物体 生理指标 体内分布 重金属污染 镉 铅 

分 类 号：X503.23[环境科学与工程—环境工程]