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镉胁迫对小麦幼苗生长及生理特性的影响

Effects of cadmium stress on the growth and physiological characteristics of wheat seedlings

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【作者】 张利红李培军李雪梅孟雪莲徐成斌

【Author】 ZHANG lihong 1,2,3 ,LI Peijun 1,LI Xuemei 4,MENG Xuelian 3,XU Chengbin 3 ( 1Shenyang Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016, China; 2Graduate School of Chinses Academy of Science,Beijing 100039, China; 3Environmental Department of Liaoning University ,Shenyang 110036,China; 4College of Chemistry and Life Science,Shenyang Normal University,Shenyang 110034, China).

【机构】 中国科学院沈阳应用生态研究所沈阳师范大学化学与生命科学学院辽宁大学环境系辽宁大学环境系 沈阳110016中国科学院研究生院北京100039沈阳110036沈阳110016沈阳110034沈阳110036

【摘要】 主要研究了重金属Cd污染对小麦生长和部分生理特性的影响。结果表明,叶绿素含量在0 2 5mmol·L-1Cd处理浓度时达到峰值,随Cd浓度的增加,含量下降。超氧化物歧化酶(SOD)、过氧化物酶(POD)活性随Cd浓度的增加而增加。丙二醛含量和细胞膜透性同样呈上升趋势。根系活力表现为先升高后下降的变化趋势。Cd胁迫下,小麦的生长受到一定程度的抑制,并随溶液中Cd浓度的增加,抑制加重

【Abstract】 Effects of Cd on growth and some physiological characteristics of wheat seedling were studied.The results showed that the content of chlorophyll was up to the high point at 0.25 mg·L -1 of Cd concentration in the solution and decreased afterwards.The activities of SOD and POD,MDA content and permeability of membrane increased with the increasing Cd concentration.The root activity increased first and decreased afterwards.The growth of wheat was inhibited under Cd stress.The higher the concentration of Cd in solution was the more serious the inhibition was.

【关键词】 Cd小麦SODPOD
【Key words】 Cdwheat seedlingSODPOD
【基金】 国家重点基础研究发展规划项目 (2 0 0 4CB4185 0 6);国家自然科学重点基金 (2 0 3 3 10 10 4);“863”(2 0 0 4AA64 90 60 );中国科学院所创新资助项目 (SLYQY0 412 )
  • 【文献出处】 生态学杂志 ,Chinese Journal of Ecology , 编辑部邮箱 ,2005年04期
  • 【分类号】S512.1
  • 【被引频次】312
  • 【下载频次】1745
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