摘要
[目的]为缓解重金属对豌豆幼苗生长发育的毒害。[方法]研究了不同浓度的硒对镉胁迫下豌豆的种子萌发、植株生长、根尖细胞分裂及过氧化物酶活性等方面的影响。[结果]镉浓度≤50.0 mg/L、硒浓度≤1.2 mg/L时,硒促进镉胁迫下豌豆种子萌发生长、根尖细胞分裂,且降低细胞畸变率;镉浓度≤10.0 mg/L、硒浓度≤0.1 mg/L能提高叶绿素含量,缓解镉的氧化胁迫;当镉浓度达到100mg/L,1.2 mg/L的硒则协同镉发生作用,加剧对豌豆幼苗的毒害作用。[结论]低浓度的硒能缓解一定浓度的镉污染毒害,增强豌豆的抗性;高浓度的硒则协同镉一起胁迫豌豆而产生毒害。
[ Objective ] The study aimed to relieve the toxic effect of heavy metal ions on the growth and development of pea seedling. [ Method ] The effects of Se with different concentrations on seed germination,plant growth, root tip cell division and activity of peroxidases of peas under Cd stress were studied. [ Result] At the concentration of Cd ≤50.0 mg/L,Se ≤1.2 mg/L,Se can enhance the seeds germination and growth, root tip cell division,and reduce cell aberration rate under Cd stress; at the concentration of Cd ≤10.0 mg/L,Se≤0.1 mg/L,chlomphyll contents were increased and oxidative stress of Cd was relieved; when the concentration of Cd was 100 mg/L,Se has the toxic effect coordinated with when the concentration of Cd was 1. 2 mg/L, and the toxic effect was enhanced of peas. [ Conclusion ] Se with a low concentration can relieve the toxic effect of Cd of certain concentration, and cooperating with Cd,Se with a high concentration can produce stress and toxic effect on peas.
出处
《安徽农业科学》
CAS
北大核心
2009年第24期11502-11504,共3页
Journal of Anhui Agricultural Sciences
基金
常熟理工学院植物学重点建设学科基金资助
