不同CO2浓度下渗透胁迫对小麦膜伤害的影响

摘要/Abstract

摘要： 研究了常规CO₂(350μl·L^-1)和CO₂倍增(700μl·L^-1)环境中生长的春小麦幼苗,渗透胁迫时叶片中活性氧含量的变化和质膜透性的变化.结果表明,生长在CO₂倍增环境中的春小麦幼苗,渗透胁迫时O₂^{·^-}及H₂O₂的增长幅度均小于常规CO₂浓度下生长的春小麦幼苗.质膜透性的增长幅度也是前者小于后者.据此认为,CO₂浓度倍增可以减轻渗透胁迫对质膜的氧化伤害,提高植物的抗旱力.

关键词: 小麦, CO₂浓度, 渗透胁迫, 活性氧, 膜伤害

Abstract: This paper studied the variation of active oxygen content and membrane permeability in leaves of spring wheat seedling exposed to osmotic stress under normal 350μl·L^-1 and doubled CO₂ concentration 700μl·L^-1.The results indicate that the increasing rate of O₂^{·^-} and H₂O₂,and the membrane permeability in wheat leaves exposed to osmotic stress in normal CO₂ concentration were higher than those in doubled CO₂.Accordingly,it is suggested that doubled CO₂ can reduce the membrane oxidative injury caused by osmotic stress,and increase plant drought resistance.

Key words: Wheat, CO₂ concentration, Osmotic stress, Active oxygen, Membrane injury

徐仰仓, 王静, 林久生, 王根轩. 不同CO₂浓度下渗透胁迫对小麦膜伤害的影响[J]. 应用生态学报, 2000, (6): 878-880.

XU Yangcang, WANG Jin, LIN Jiusheng, WANG Genxuan. Effect of osmotic stress on wheat membrane injury under different CO₂ concentrations[J]. Chinese Journal of Applied Ecology, 2000, (6): 878-880.

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不同CO₂浓度下渗透胁迫对小麦膜伤害的影响

Effect of osmotic stress on wheat membrane injury under different CO₂ concentrations

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