| 低温下外源水杨酸对水稻幼苗光合作用的影响 |
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| 引用本文： | 张蕊,龚守富,李可凡,王三根,吕俊.低温下外源水杨酸对水稻幼苗光合作用的影响[J].湖北农业科学,2012(5):883-886. |
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| 作者姓名： | 张蕊 龚守富 李可凡 王三根 吕俊 |
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| 作者单位： | 周口职业技术学院生物工程系;信阳农业高等专科学校规划与设计系;西南大学农学与生物科技学院 |
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| 基金项目： | 重庆市自然科学基金重点项目(2009BA1006);重庆市水稻玉米良种创新重大专项(CSTC,2007AB1033;2007AA1019) |
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| 摘 要： | 以水稻(Oryza sativa L.)品种西农优1号为材料,用0.5 mmol/L外源水杨酸(SA)对水稻幼苗进行叶面喷施和灌根预处理。结果表明,用0.5 mmol/L SA预处理使水稻幼苗叶片在低温胁迫下总叶绿素含量增加,气孔导度及胞间CO2含量下降,净光合速率增加,电解质渗漏率和丙二醛(MDA)含量降低。说明SA可能为低温胁迫下水稻幼苗的光合器官提供保护作用,从而减轻低温胁迫对水稻幼苗的伤害,提高水稻幼苗的抗寒性。
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| 关 键 词： | 水稻(Oryza sativa L.) 幼苗 低温 外源水杨酸(SA) 光合作用 |
Effects of Salicylic Acid on Photosynthesis of Rice Seedlings under Chilling Stress |
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| Institution: | ZHANG Rui1,GONG Shou-fu2,LI Ke-fan1,WANG San-gen3,LU Jun3(1.Department of Biological Engineering,Zhoukou Vocational Technical College,Zhoukou 466000,Henan,China; 2.Department of Planning and Design,Xinyang Agricultural College,Xinyang 464000,Henan,China; 3.College of Agronomy and Biotechnology,Southwest University,Chongqing 400716,China) |
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| Abstract: | The effect of salicylic acid(SA) pretreatment on photosynthesis of "Xinongyou 1" rice seedlings under chilling stress was investigated.The results showed that 0.5 mmol/L SA pretreatment increased the chlorophyll content,and net photosynthetic rate,while decreased stomatal conductivity,intercellular content,electrolytes leakage and malondialdehyde(MDA).It was indicated that SA pretreatment could increase chilling resistance of rice seedling by protecting photosynthetic organization. |
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| Keywords: | rice(Oryza sativa L ) seedling chilling stress salicylic acid(SA) photosynthesis |
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