2021年11月28日 星期日
镉胁迫对狭叶香蒲某些生理指标的影响
Effects of cadmium stress on some physiological indexes of Typha angustifolia
2007年 第16卷 第1期 页码[74-76]    下载全文[0.4MB]  
摘要

利用水培法研究了Cd胁迫对狭叶香蒲(Typha angustifolia L.)某些生理指标的影响。结果表明,Cd浓度在0.4和1.0 mg.L-1时,狭叶香蒲的叶绿素含量呈上升趋势;Cd浓度高于1.0 mg.L-1时,叶绿素含量有所下降。当Cd浓度达1.5 mg.L-1时,狭叶香蒲的根系活力明显降低。随Cd浓度的增加,超氧化物歧化酶(SOD)和过氧化物酶(POD)活性基本呈现低浓度时上升高浓度时下降的变化趋势;丙二醛(MDA)含量则呈上升趋势。 

Abstract

Effects of cadmium stress on some physiological indexes of Typha angustifolia L. were studied by hydroponic culture method. The results showed that content of chlorophyllincreasedgradually when concentration of Cd was 0.4 or 1.0mg·L-1, but it decreased when concentration of Cd was higher than 1.0mg·L-1. When concentration of Cd reached to 1.5mg·L-1, root vitality decreased obviously. With Cd concentration increased gradually, activities of SOD and POD were increased in low concentration of Cd and decreased in high concentration of it, content of MDA was increased gradually.

关键词狭叶香蒲; 镉胁迫; 根系活力; 生理指标;
Key wordsTypha angustifolia L.; cadmium stress; root vitality; physiological indexes
作者吴晓丽1,罗玉明2,徐迎春1,鄢贵龙2,赵 艳1
所在单位1.南京农业大学园艺学院,江苏南京210095;
2.淮阴师范学院生物系,江苏淮安223300
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基金项目江苏省教育厅自然科学基金资助项目(02180009); 淮安市农业科技计划资助项目(0352);