华北农学报

所属专题: 小麦

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高温胁迫对小麦幼苗几个生理生化指标的影响

郭洪雪, 宋希云, 燕增文, 裴玉贺, 王海娟, 刘兰浩   

  1. 莱阳农学院生命科学院, 山东青岛?? 266109
  • 收稿日期:2007-04-22 出版日期:2007-12-30
  • 通讯作者: 宋希云(1961-) , 男, 山东安丘人, 教授, 博士, 主要从事作物遗传育种和分子生物学研究。
  • 作者简介:郭洪雪(1976-) , 女, 山东济南人, 在读硕士, 主要从事小麦高温胁迫研究
  • 基金资助:
    国家粮食丰产科技工程项目(2004BA520A08-JS04)

Effects of Heat Stress on Several Physiological and Biochemical Indexes of Wheat

GUOHong-xue, SONGXi-yunYANZeng-wen, PEIYu-he, WANGHai-juan, LIULan-hao   

  1. Life Science Department of Laiyang Agriculture College, Qingdao 266109, China
  • Received:2007-04-22 Published:2007-12-30

摘要: 采用人工气候室控温,在大气相对湿度40%的条件下,以22℃为对照,在32,36,40℃的高温胁迫条件下,对烟农19二叶期小麦叶片内叶绿素含量、超氧化物岐化酶总活力、丙二醛含量和可溶性糖含量的变化规律进行了研究。结果表明:随着胁迫处理时间的延长,叶片内叶绿素含量迅速降低,且随胁迫温度的升高,叶绿素降解率增大;超氧化物歧化酶(SOD)活性及膜脂过氧化产物(MDA)含量呈现先上升后下降趋势;可溶性糖含量呈上升趋势,且随胁迫温度的升高,可溶性糖含量升高幅度呈上升趋势。这些变化可能是由于高温胁迫造成细胞内膜系统损害所致。

关键词: 小麦, 高温胁迫, 生理生化指标

Abstract: Under the condit ion of high temperature( 22℃( CK) , 32, 36, 40℃) and the atmospheric relative humiditywas 40% , physiological and biochemical indexes including the chlorophyll content, the Superoxide dismutase( SOD) activ??ity, the Malondialdehyde(MDA) content and the soluble sugar content were studied by collecting the f irst leaves of wheatYannong 19 when the wheat is in double leaves period. As the result shows: with the extension of stress, the content ofchlorophyll drops quickly, furthermore,with the rising of temperature, the rate of degradation of chlorophyll will increase.Total activity of SOD and the content of MDA rise first then drop, while the soluble sugar content rises all along.

Key words: Wheat, Heat stress, Physiological and biochemical indexes

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引用本文

GUOHong-xue, SONGXi-yunYANZeng-wen, PEIYu-he, WANGHai-juan, LIULan-hao. Effects of Heat Stress on Several Physiological and Biochemical Indexes of Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, doi: 10.7668/hbnxb.2007.S1.018.

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