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生态学杂志 ›› 2004, Vol. ›› Issue (5): 111-115.

• 研究报告 • 上一篇    下一篇

UV-B辐射和Hg2+复合处理对黑小麦生理代谢和生长的影响

杜英君1,2,3, 史奕1, 刘振伟4   

  1. 1. 中国科学院沈阳应用生态研究所陆地生态过程重点实验室, 沈阳, 110016;
    2. 沈阳工业大学, 沈阳, 110023;
    3. 中国科学院研究生院, 北京, 100039;
    4. 北宁市林业局, 北宁, 121300
  • 收稿日期:2003-10-13 修回日期:2004-03-18 出版日期:2004-10-10
  • 通讯作者: 杜英君,男,1963年生,讲师,博士.主要从事生理生态学方面研究,发表论文数篇.
  • 基金资助:
    中国科学院沈阳应用生态研究所领域前沿创新资助项目(SCXSM0302)

Effect of UV-B radiation and Hg2+ combined treatment on physiological metabolism and growth of black wheat seedlings

DU Yingyun1,2,3, SHI Yi1, LIU Zhenwei4   

  1. 1. Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Science, Shenyang 110016, China;
    2. Shenyang University of Technology, Shenyang 110023, China;
    3. Graduate Scholl of Chinese Academy of Sciences, Beijing 100039, China;
    4. Beining Municipal Forestry Bureau, Beining 121300, China
  • Received:2003-10-13 Revised:2004-03-18 Online:2004-10-10

摘要: 在室内,用1.35w·m-2剂量的UVB和1.29mmol·L-1浓度的Hg2+对黑小麦幼苗进行复合处理。结果表明,随处理时间的延长,叶绿素(Chl)、类胡萝卜素(Car)含量和光系统Ⅱ(PSⅡ)电子传递活性下降,SOD活性下降不明鲜;根系TTC还原能力下降;而叶片细胞膜相对透性(El)、丙二醛(MDA)和H2O2含量增加;处理12天后植株高和鲜重下降。MDA和H2O2含量指标,UVB+Hg2+的复合处理大于Hg2+的单独处理。

关键词: 黄土旱塬, 不同覆盖, 土壤水分, 土壤温度, 土壤养分

Abstract: The black wheat seedlings treated with 1.35 w穖-2 dose of UV-Birradiation and 1.29 mmol稬-1concentration of Hg2+ were studied under laboratory conditions.The results showed that the contents of chlorophyll (Chl) and carotenoids (Car) and rate of PSIIelectron transport decreased,activity of superoxide dismutase (SOD) also decreased but less obvious,while the reduction capacity of TTC in roots decreased.However electrolyte leakage (EL) and content of malondialdehyde (MDA) and H2O2 increased.The plant height and fresh weight decreased 12 days treatment after treater.The effect of combined treatment on the content of MDA and H2O2were larger than treatment with Hg2+only.

Key words: Arid-highland of loess plateau, Different mulching, Soil water, Soil tentpetatute. Soil nutrients

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