| CO2浓度升高对干旱胁迫下小麦光合作用和抗氧化酶活性的影响 |
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| 引用本文： | 陈雄,吴冬秀,王根轩,任红旭.CO2浓度升高对干旱胁迫下小麦光合作用和抗氧化酶活性的影响[J].生态学杂志,2000,0(6):881-884. |
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| 作者姓名： | 陈雄 吴冬秀 王根轩 任红旭 |
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| 作者单位： | 1. 兰州大学干旱农业生态国家重点实验室, 兰州730000;2. 中国科学院兰州寒区旱区环境与工程研究所冰芯与寒区环境实验室, 兰州730000 |
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| 基金项目： | 国家自然科学基金资助项目(39670139);中国科学院重点项目(B类)KZ952S1216) |
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| 摘 要： | 在CO2浓度分别为350μmol·mol-1和倍增浓度(700μmol·mol-1)的两个开顶式生长室内,研究了干旱胁迫下小麦(Triticum aestivum L.)光合作用和抗氧化酶活性的变化.结果表明,CO2浓度升高显著提高了小麦的净光合速率,降低了蒸腾速率,提高了气孔阻力和水分利用效率.倍增CO2浓度明显提高了SOD、POD及CAT酶活性,增强了小麦的抗氧化保护能力和抗旱性.
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| 关 键 词： | 小麦 CO2浓度升高 干旱胁迫 抗氧化酶类 |
| 收稿时间： | 1999-10-29 |
Effect of elevated CO2 concentration on photosynthesis and antioxidative enzyme activities of wheat plant grown under drought condition |
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| CHEN Xiong,WU Dongxiu,WANG Genxuan,RRN Hongxu.Effect of elevated CO2 concentration on photosynthesis and antioxidative enzyme activities of wheat plant grown under drought condition[J].Chinese Journal of Ecology,2000,0(6):881-884. |
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| Authors: | CHEN Xiong WU Dongxiu WANG Genxuan RRN Hongxu |
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| Institution: | 1. State Key Laboratory of Arid Agroecology, Lanzhou University, Lanzhou 730000;2. Laboratory of Ice Core and Cold Region Environment,
Cold and Arid Regions Envi ron mental and Engi neeri ng Research Instit ute, Chnese A cademy of Sciences, Lanzhou 730000 |
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| Abstract: | The photosynthesis and antioxidative enzyme activities of wheat plants grown in two open top chambers with CO2 concentrations of 350μmol·mol-1 and 700μmol·mol-1 were examined under drought stress.The result showed that elevated CO2 concentration obviously enhanced the photosynthesis,stomatal resistance and water use efficiency,but decreased the transpiration of wheat.Doubled CO2 concentration significantly increased the activities of CAT,POD and SOD,which enhanced the abilities of antioxidative defence and drought tolerance. |
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| Keywords: | Triticum astivum Elevated CO2 concentration Drought stress Antioxidative enzymes |
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