Effect of Ca, Mg, K, Na and Ph on Copper Toxicity to Pakchoi

摘要：

　　The influence of calcium,magnesium,sodium,potassium and hydrogen ions on copper (Cu) toxicity to pakchoi (Brassica chinensis L.) was independently estimated by measuring root elongation in nutrient solutions.Increases in Ca2+,Mg2+ and H+ significantly increased the median effective concentrations (EC50Cur; i.e.the concentration that reduced root elongation by 50% based on total soluble Cu) by a factor of 12 for all treatments,which clearly demonstrated the limitation of using total Cu concentration to predict Cu toxicity to pakchoi.EC50Cu2+ (i.e.the concentration that reduced root elongation by 50% based on free Cu2+ activity)was not significantly influenced by changing the Ca2+,Mg2+ and H+ activities.

关键词： Copper Toxicity Pakchoi

作者: Yinglu Zheng Xuedong Wang Yibing Ma Ying Li Luo Hua

作者单位: College of Resource Environment and Tourism,Capital Normal University,105 North Road of Xisanhuan,Be Ministry of Agriculture Key Laboratory of Plant Nutrition and Nutrient Cycling,Agricultural Resource

会议类型: 国际会议

会议名称: 3rd International Conference on Pollution Ecology(第三届污染生态学国际会议(3rd ICPE))

会议地点: 天津

会议语种:英文

页码: 101-101

在线出版日期: 2012-11-06（万方平台首次上网日期，不代表论文的发表时间）