铜胁迫对花生幼苗生长及生理代谢的影响  

Effects of Copper Stress on Growth and Physiological Metabolism of Peanut Seedlings

作　　者：周娜娜 武耀廷[2] 高华援[3] 刘海龙[3] 林伟 冯素萍 ZHOU Nana;WU Yaoting;GAO Huayuan;LIU Hailong;LIN Wei;FENG Suping(College of Ecology and Environment,Hainan Tropic Ocean University,Sanya 572022;Hainan University,Haik ou 570228;Institute of Peanut Research,Jilin Academy of Agricultural Sciences,Gongzhuling 136100;Experi mental center,Hainan Tropic Ocean University,Sanya 572022;College of Food Science and Engineering,Hainan Tropic Ocean University,Sanya 572022,China)

机构地区：[1]海南热带海洋学院生态环境学院,海南三亚572022 [2]海南大学,海口570228 [3]吉林省农业科学院花生研究所,吉林公主岭136100 [4]海南热带海洋学院实验中心,海南三亚572022 [5]海南热带海洋学院食品科学与工程学院,海南三亚572022

出　　处：《东北农业科学》2019年第6期6-9,共4页Journal of Northeast Agricultural Sciences

基　　金：海南省引进集成科技创新项目(KJHZ2013-04);三亚市农业科技创新项目(2015KJ12);MARS国际合作项目(1001603967)。

摘　　要：以四粒红花生为试材,采用盆栽方式,设置不同浓度硫酸铜溶液培养花生幼苗,探究了铜离子胁迫对花生幼苗的生长及生理代谢的影响,以期为进一步了解重金属铜对花生生长的毒害机制提供理论参考。结果表明:随着铜离子浓度的增加,花生幼苗的鲜重和侧根长度持续下降;株高,主根长,叶片中SOD、POD和CAT活性,茎和叶片中脯氨酸含量,叶绿素a、叶绿素b、类胡萝卜素含量均呈现先升高后降低的趋势;MDA含量、茎叶中的相对电导率则持续上升。铜离子浓度在100μmol/L时,花生幼苗表现出应激反应,浓度达到1 000μmol/L时已危害花生生长。Effects of copper ion stress on the growth and physiological metabolism of peanut seedlings were studied by treating peanut seedlings of Silihong peanut in pot with different concentrations of copper sulfate solution in order to provide theoretical reference for further understanding the toxic mechanism of heavy metals on peanut growth.The results showed that with the increase of copper ion concentration, the fresh weight and lateral root length of peanut seedlings continued to decrease;plant height, main root length, SOD, POD and CAT activities in leaves, proline content in stems and leaves, chlorophyll A content, chlorophyll B content and carotenoid content all increased first and then decreased, and there was a peak in MDA content and relative electricity content in stems and leaves.When the concentration of copper ion was 100μmol/L, peanut showed stress reaction, and when the concentration reached 1 000μmol/L, peanut growth was harmed.

关 键 词：铜胁迫 花生 幼苗 生长 生理 

分 类 号：S565.2[农业科学—作物学]