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| 短毛蓼对Cd的富集特性研究 | |
| 引用本文： | 邓华,李明顺,陈英旭,于方明.短毛蓼对Cd的富集特性研究[J].安徽农业科学,2010,38(10):5284-5286. |
| 作者姓名： | 邓华 李明顺 陈英旭 于方明 |
| 作者单位： | 1. 广西师范大学环境与资源学院,广西,桂林,541004;浙江大学环境与资源学院,浙江,杭州,310029;广西环境工程与保护评价重点实验室,广西,桂林541004 2. 广西师范大学环境与资源学院,广西,桂林,541004;广西环境工程与保护评价重点实验室,广西,桂林,541004 3. 浙江大学环境与资源学院,浙江,杭州,310029 |
| 基金项目： | 国家自然科学基金资助项目，广西重点实验室基金资助项目，广西师范大学青年基金资助项目 |
| 摘 要： | 目的]研究锰超富集植物短毛蓼（Polygonum pubescens Bl.）对重金属镉的响应和富集特征。方法]采用Hoagland营养液为培养基质,设定8种镉处理浓度（0、25、50、100、200、500、800、1000mg/L）。结果]在较低镉处理浓度（25mg/L、50mg/L）下,短毛蓼的生物量与对照相比差异不显著（P〈0.05）;在试验设定的各种镉处理水平下,短毛蓼根和地上部Cd含量均超过100mg/kg,Cd富集系数均大于1;随着镉处理浓度的增加,短毛蓼体内的镉含量和镉富集量显著增加,镉处理浓度超过50mg/L时,转运量系数大于1。结论]短毛蓼对镉具有较强的耐受性和富集能力,在镉污染土壤的植物修复中具有一定的应用潜力。 |
| 关 键 词： | 短毛蓼 镉 富集 植物修复 |
Accumulation Characteristics of Cd in Polygonum pubescens Bl. |
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| Institution: | DENG Hua et al (School of Environment and Resources,Guangxi Normal University,Guilin,Guangxi 541004) |
| Abstract: | Objective] The research aimed to study the response and accumulation characteristics of Cd in Polygonum pubescens Bl. Method] Taking Hoagland nutritional solution as the culture substrate, eight kinds of Cd concentrations (0, 25, 50, 100, 200, 500, 800, 1 000 mg/L) were set up. Result] Under low concentrations of Cd (25 and 50 mg/L), the biomass of P. pubescens had no significant difference with CK (P<0.05). Under all the test concentrations of Cd, Cd content in the roots and shoots of P. pubescens exceeded 100 mg/kg and the enrichment coefficients of Cd were over 1. With the increasing of Cd concentration, Cd content and Cd accumulation amount in P. pubescens increased significantly. When Cd concentration exceeded 50 mg/L, translocation capacity coefficient was greater than 1. Conclusion] Polygonum pubescens has high tolerance and accumulation capacity of Cd, and it may has some potential on the phytoremediation of Cd-contaminated soil. |
| Keywords: | Polygonum pubescens Cd Accumulation Phytoremediation |
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