| 三叶草对重金属镉的富集特性研究 |
| |
| 引用本文： | 刘燕,谢阿娜.三叶草对重金属镉的富集特性研究[J].河南农业科学,2011,40(1):82-84. |
| |
| 作者姓名： | 刘燕 谢阿娜 |
| |
| 作者单位： | 贵阳学院,贵州贵阳,550005 |
| |
| 基金项目： | 贵州省科学技术基金资助，贵州省教育厅资助，贵州省高等学校重点支持学科资助 |
| |
| 摘 要： | 研究了不同质量浓度镉胁迫下三叶草对重金属的富集特性.结果表明,在试验所设定的镉质量浓度范围内,三叶草的根、茎、叶各部均未出现明显的镉毒害症状,说明三叶草对镉胁迫有一定的耐受性.在不同质量浓度镉胁迫下,三叶草根、茎、叶各部的镉含量均出现了不同程度的变化,不论是地上部分或是地下部分,其富集系数均随着镉质量浓度的增加呈现下降...
|
| 关 键 词： | 三叶草 镉 富集特性 富集系数 转运系数 |
Enrichment Features of Trifolium pratense L.under Cadmium Stress |
| |
| LIU Yan,XIE A-na.Enrichment Features of Trifolium pratense L.under Cadmium Stress[J].Journal of Henan Agricultural Sciences,2011,40(1):82-84. |
| |
| Authors: | LIU Yan XIE A-na |
| |
| Institution: | (Guiyang College,Guiyang 550005,China) |
| |
| Abstract: | The enrichment features of Trifolium pretense L.under cadmium stress were studied.The results showed that roots,stems and leaves of Trifolium pretense L.did not display obvious poisoning symptoms and had partial tolerance to cadmium stress under certain concentration of Cd.The content of Cd in the three parts of Trifolium pratense L.varied under cadmium stress of different concentration.The bioaccumulation factor of overground part and underground part showed a downward trend with increasing concentration of Cd.The coefficient of enrichment was greater than 1 for all.At different levels the critical content of cadmium enriched by Trifolium pratense L.was greater than 100μg/g and the average transfer coefficient was 1.0258.When the concentration of cadmium was below 25mg/L,the transfer coefficient was close to or greater than 1.The results demonstrated that Trifolium pratense L.had enrichment features under cadmium stress. |
| |
| Keywords: | Trifolium pratense L Cd Enrichment features Bioaccumulation factor Transfer coefficient |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
