摘要： 将小麦幼苗分别放在含有100μmol/L Cu2+的培养液和100μmol/L Cd2+的培养液中培养,观察其体内重金属含量、丙二醛(MDA)、植物螯合肽(PC)和谷胱甘肽(GSH)的变化。试验结果表明,在铜、镉胁迫下,小麦体内重金属含量逐渐增加,尤以根中增加明显,约75倍,而叶中增加较少,为2~5倍;无论是在根中还是在叶中,镉的含量都高于铜的含量;铜、镉胁迫下小麦叶片膜脂过氧化程度都高于根部无论是铜胁迫还是镉胁迫下,小麦体内叶片的GSH含量均高于根部,而PC含量均低于根部。

关键词: 小麦, 镉, 铜, 丙二醛, 植物螯合肽, 谷胱甘肽

Abstract: Wheat were cultivated in hydroponic culture solution with 100 μmol/L Cu2+ and 100 μmol/L Cd2+separately,the concentration of copper and cadmium,malonaldehyde,phytochelatin and glutathione in roots and leaf were investigated.The results revealed that under stress the concentration of copper and cadmium increased gradually,especially in roots the concentration increased remarkably,75 fold growth approximately,but in leaf the increase was slowly,2-5 fold approximately.The content of cadmium is higher than copper in leaf and roots.Lipid peroxidation in leaf was stronger than that in roots.Under heavy metal stress the concentration of glutathione in leaf was higher than that in roots,while phytochelatins in leaf was lower than that in roots.

Key words: Wheat, Cadmium, Copper, Malonaldehyde, Phytochelatin, Qutathione

中图分类号: 

• Q95