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| 朝天委陵菜的重金属耐性与吸收性研究 | |
| 引用本文： | 胡嫣然,周守标,谭维娜,黄玉娟,骆永明.朝天委陵菜的重金属耐性与吸收性研究[J].土壤,2011,43(3):476-480. |
| 作者姓名： | 胡嫣然 周守标 谭维娜 黄玉娟 骆永明 |
| 作者单位： | 1. 安徽师范大学生命科学学院,重要生物资源保护与利用安徽省重点实验室,安徽芜湖241000;中国科学院土壤环境与污染修复重点实验室(南京土壤研究所),南京210008 2. 安徽师范大学生命科学学院,重要生物资源保护与利用安徽省重点实验室,安徽芜湖241000 3. 中国科学院土壤环境与污染修复重点实验室(南京土壤研究所),南京,210008 |
| 基金项目： | 中国科学院知识创新工程重要方向项目（KSCX2-YW-G-053）和国家高技术研究发展计划请者一个ia juan, t.p them make the decision it accept our 项目（2006AA10Z406）资助 |
| 摘 要： | 利用植物生长室水培试验和温室土培盆栽试验的方法,研究了朝天委陵菜在不同浓度Pb水培条件下和Cu、Zn、Pb、Cd复合污染土壤条件下的重金属耐性和吸收性,结果表明,水培条件下随着处理浓度的增加,朝天委陵菜均生长良好,虽高浓度Pb处理下出现植株矮小、叶渐黄、根系变黑等毒害症状,但植株并未死亡,表明在水培条件下朝天委陵菜对Pb具有极强的耐性;在最高浓度3 600μmol/L Pb处理下地上部和根中Pb浓度达到最大值,分别为947 mg/kg和71 053 mg/kg。在温室土培盆栽条件下,朝天委陵菜在外加Cu、Zn、Pb和Cd分别为200、1 000、1 000和5 mg/kg的土壤上较对照生长受到抑制,地上部Cu、Zn、Pb和Cd浓度分别达到741±164、18 248±2 222、1 543±483和29.4±5.2 mg/kg;外加重金属更高时则导致植株死亡。朝天委陵菜对Pb胁迫和Cu、Zn、Pb、Cd复合污染土壤具有较强的耐受性,可作为重金属尤其是Pb污染土壤的修复植物。 |
| 关 键 词： | 朝天委陵菜 重金属 生物量 吸收性 |
Tolerance and accumulation of heavy metals by Potentilla supine |
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| HU Yan-ran,ZHOU Shou-biao,WU Long-hu,TAN Wei-n,HUANG Yu-juan,LUO Yong-ming.Tolerance and accumulation of heavy metals by Potentilla supine[J].Soils,2011,43(3):476-480. | |
| Authors: | HU Yan-ran ZHOU Shou-biao WU Long-hu TAN Wei-n HUANG Yu-juan LUO Yong-ming |
| Institution: | Anhui Provincial Key Laboratory of Biological Resources Conservation and Utilization, College of Life Science, Anhui Normal University |
| Abstract: | Growth chamber hydroponics and glass house pot experiment were conducted to study the tolerance and uptake of Pb in hydroponics condition and of Cu, Pb, Zn and Cd under mixed heavy metal contaminated conditions by Potentilla supina from a Cu mine area, the results showed that Potentilla supina could grow normally with the increase of Pb concentration in hydroponics solution, toxic symptom such as slow plant growth with yellow leaves and black roots at the treatment of high Pb concentration, but plant did not die, Potentilla supina had strong tolerance to Pb at hydroponics culture. Pb concentrations reached to the maximum of 947 mg/kg and 71 053 mg/kg in shoot and root at the highest concentration of solution Pb 3 600 mol/L. In pot experiment, plant grew well in the treatment of control, but grew slowly at the mixed metal pollution soils, Cu, Zn, Pb and Cd in the shoot were 741 ± 164, 18 248 ± 2 222, 1 543 ± 483 and 29.4 ± 5.2 mg/kg respectively at the treatment of Cu 200 mg/kg, Zn 1 000 mg/kg, Pb 1 000 mg/kg and Cd 5 mg/kg, but plant died at the treatment with very high metal pollution level. These results showed that Potentilla supina has strong tolerant to Pb and Cd, Zn, Cu co-contamination, and can be used to remediate heavy metal polluted soil. |
| Keywords: | Potentilla supine Heavy metals Biomass Uptake |
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