Characteristics of Uptake and Accumulation of Pb and Cd in Osmanthus fragrans(Thunb.) *** Single and Combined Stresses of Pb and Cd

作     者：王飞 胥焘 郭强 聂小倩 梅朋森 黄应平 

作者机构：三峡库区生态环境教育部工程研究中心(三峡大学)湖北宜昌443002 宜昌市林业局湖北宜昌443002 

出 版 物：《Agricultural Science & Technology》 (农业科学与技术（英文版）)

年 卷 期：2012年第13卷第10期

页      面：2219-2225页

学科分类：090706[农学-园林植物与观赏园艺] 0907[农学-林学] 09[农学] 

基　　金：Supported by Major Science and Technology Program for Water Pollution Control and Treatment in the National Eleventh Five-Year Plan(2009ZX07104-003) Major Science and Technology Program for Water Pollution Control and Treatment in the National Twelfth Five-Year Plan(2012ZX07104-002-04) the Outstanding Youth Innovative Team Plan Project of Hubei Province(No:T200703)~~ 

主　　题：Pb Cd Osmanthus fragrans(Thunb.) Lour. Accumulation Combined stress 

摘      要：[Objective] This study aimed to investigate the characteristics of Pb and Cd uptake and accumulation in Osmanthus fragrans（Thunb.） *** single and combined stress of Pb and Cd.[Method] Pot experiment was adopted with *** seedlings as experimental materials to investigate the effect of single and combined stresses of Pb and Cd on the growth of *** seedlings under 0,50,100,500,1 000 and 2 000 mg/kg of Pb and 0,1,10,50,100 and 200 mg/kg of Cd.[Result] Under the experimental conditions,the growth of *** seedlings was significantly inhibited under moderate Pb stress（500 mg/kg） and high Cd stress（100 mg/kg）;the decreasing order of Pb uptake rate of different *** tissues was root stem leaf;the decreasing order of Cd content of different *** tissues was root stem leaf,while the decreasing order of Cd uptake rate of different *** tissues was stem root leaf.[Conclusion] Under combined stress,low concentrations of Pb and Cd can mutually promote the uptake and accumulation,while high concentrations of Pb and Cd can mutually inhibit the uptake and accumulation.