WEI Xindong,HUANG Yige,WANG Ying.Effect of Heavy Metal Cadmium and Lead Stress on Seed Germination and Seedlings Growth of the Trifolium repens[J].Northern Horticulture,2016,40(02):71-74.[doi:10.11937/bfyy.201602019]
镉、铅胁迫对白三叶种子萌发及幼苗生长的影响
- Title:
- Effect of Heavy Metal Cadmium and Lead Stress on Seed Germination and Seedlings Growth of the Trifolium repens
- Keywords:
- heavy metal; Trifolium repens; seed germination; seeding growth
- 文献标志码:
- A
- 摘要:
- 以白三叶为试材，采用不同浓度Cd和Pb胁迫的方法，研究了重金属Cd和Pb胁迫对白三叶种子萌发和幼苗生长特性的影响，以期为进一步研究白三叶对重金属污染土壤的修复作用提供理论参考。结果表明：Cd和Pb胁迫对白三叶发芽率和发芽速率具有显著影响，随着Cd和Pb浓度的增加，对白三叶种子发芽率和发芽速率抑制作用逐渐增加。Cd和Pb对幼苗的苗长、根长和苗重均有严重影响，随Cd和Pb浓度的增加，抑制作用越明显。
- Abstract:
- With the Trifolium repens as experimental materials,using the different concentrations of heavy metal Cd and Pb stress.To explore the Trifolium repens seed germination and seedling growth characteristics under the heavy metal Cd and Pb stress.Designed to the Trifolium repens for further studies on heavy metal contaminated soil repair function to provide theoretical reference.The results showed that there were significant effect on the Trifolium repens germination rate and germination speed under the heavy metal Cd and Pb stress.With the increase of concentration of heavy metal Cd and Pb，the inhibitory effect on the Trifolium repens seed germination rate and germination speed increased gradually.The Trifolium repens seedling length，root length，seedling dry weight dropped significantly.There were significant effect on the Trifolium repens seedling length，seedling root length and seedling dry weight under the heavy metal Cd and Pb stress.With the increase of concentration of heavy metal Cd and Pb，the inhibitory effect more obvious.
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备注/Memo
第一作者简介：韦新东（1966-），男，吉林长春人，博士，教授，现主要从事环境治理等研究工作。E-mail：740488211@qq.com. 基金项目：吉林建筑大学高等教育研究资助项目（XJY2014017）。