重金属Cr^(6+)、Mn^(2+)污染对小麦幼苗生理生化特性及生长的影响研究  

Effects of Heavy Metal Cr^(6+) and Mn^(2+) on Physiological-biochemical Characteristic and Growth of Wheat Seedlings

作　　者：畅喜云[1,2,3] 范月君[1,2] 陈志国[3] 

机构地区：[1]青海畜牧兽医职业技术学院,青海湟源812100 [2]甘肃农业大学草业学院草业生态系统教育部重点实验室中-美草地畜牧业可持续发展研究中心,甘肃兰州730070 [3]中国科学院西北高原生物研究所,青海西宁810000

出　　处：《种子》2012年第8期39-42,48,共5页Seed

基　　金：青海省科技攻关项目(编号:2005-N-103);青海省自然科学基金(编号:2012-ZR-2999)资助

摘　　要：对不同浓度Cr6+、Mn2+处理的小麦种子萌发、小麦叶片叶绿素组成含量及SOD、POD酶活性的变化进行了研究。结果表明,低浓度处理(Cr6+浓度≤10 mg/L、Mn2+浓度≤8 mg/L)能够促进小麦种子萌发和生长,提高叶绿素含量及SOD、POD酶活性;但随着处理浓度的升高,Cr6+、Mn2+对小麦的抑制作用逐渐增强,毒害作用明显。The changes of wheat germination, chlorophyll composition and content in the leaves, SOD and POD enzymes activities influenced by Cr^6＋ and Mn^2＋ were studied. The results showed that low concentration of Cr^6＋ , Mn^2＋ treatments could promote wheat seed germination, increase the chlorophyll content, and also improve of SOD and POD enzymes activities. However, the obvious toxic action was observed, chlorophyll content in the leaves, and the POD and SOD enzymes activities would be restrained with the increase of concentration of Cr^6 ＋ and Mn^2 ＋ treatment.

关 键 词：重金属Cr6+、Mn2+ 小麦萌发 叶绿素组成含量 SOD POD酶活性 

分 类 号：X503.231[环境科学与工程—环境工程] S512.1[农业科学—作物学]