Translocation analysis and safety assessment of cadmium and lead in two water spinach cultivars with distinctive shoot Cd and Pb concentrations
Abstract A pot experiment was conducted to investigate the translocation of Cd and Pb and assess the safety of edible parts in two cultivars of water spinach (Ipomoea aquatica Forsk,) contrasting in shoot Cd and Pb concentrations.A low-Cd-Pb cultivar (QLQ) and a high-Cd-Pb cultivar (T308) were grown in five soils with different concentrations of Cd and Pb.The results showed that QLQ had lower Cd and Pb concentrations in stems and leaves and higher root Cd concentration than T308 did.Root Pb concentration of T308 dramatically increased with the soil Pb concentration and was higher than that of QLQ in the highest Pb treatment.The root-to-stem Cd translocation ability in T308 was 2.3-3.0-fold higher than that in QLQ.Nevertheless, no significant relationship existed in the root-to-stem Pb translocation between QLQ and T308.The bioconcentration factors (BCFs) for Cd and Pb in the two cultivars remained stable in different Cd or Pb treatments, which were attributable to the homeostatic control mechanisms of Cd and Pb in water spinach.
cadmium (Cd) lead (Pb) water spinach (Ipomoea aquatica Forsk.) cultivars translocation
辛俊亮 黄白飞 刘爱群 周雯婧 廖可兵
湖南工学院安全与环境工程学院
国内会议
第三届重金属污染防治及风险评价研讨会暨重金属污染防治专业委会2013年学术年会
长沙
英文
72-82
2013-10-11（万方平台首次上网日期，不代表论文的发表时间）