| 旱稻×稗草杂交后代YF2-1光合作用气体交换、叶绿素荧光和抗氧化酶系统对渗透胁迫的响应 |
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| 引用本文： | 丁在松,王春艳,关东明,赵凤悟,赵明.旱稻×稗草杂交后代YF2-1光合作用气体交换、叶绿素荧光和抗氧化酶系统对渗透胁迫的响应[J].作物学报,2011,37(5):876-881. |
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| 作者姓名： | 丁在松 王春艳 关东明 赵凤悟 赵明 |
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| 作者单位： | 1 中国农业科学院作物科学研究所 / 农业部作物生理生态与栽培重点实验室, 北京 100081；2 中国矿业大学(北京)化学与环境工程学院, 北京 100083；3 河北省农林科学院旱作农业研究所，河北衡水 053000 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)项目，国家科技支撑计划粮食丰产工程项目 |
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| 摘 要： | 为了明确旱稻×稗草杂交后代YF2-1对渗透胁迫的耐性是否得到了改善，以YF2-1及其母本旱稻品种H65为材料，在苗期采用PEG-6000进行渗透胁迫处理，研究它们的气体交换参数、叶绿素荧光参数及抗氧化酶活性对渗透胁迫的响应。结果表明，在渗透胁迫处理下，YF2-1更能维持较高的净光合速率(Pn)和气孔导度(Gs)。这可能与YF2-1具有更好的持水能力，并能有效地通过热耗散(NPQ高)消耗过剩光能，通过高活性的抗氧化酶诱导来清除活性氧，从而避免活性氧伤害相关。的确，旱稻与稗草的远源杂交提高了旱稻对渗透胁迫的抗性。
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| 关 键 词： | 旱稻 远缘杂交 光合特征 渗透胁迫 |
| 收稿时间： | 2010-10-09 |
Response of Gas Exchange, Chlorophyll a Fluorescence and Anti-oxidation Enzymes Activities to Osmotic Stress in an Upland Rice Progeny YF2-1 Derived from Oryza sativa x Echinochloa caudata |
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| DING Zai-Song,WANG Chun-Yan,GUAN Dong-Ming,ZHAO Feng-Wu,ZHAO Ming.Response of Gas Exchange, Chlorophyll a Fluorescence and Anti-oxidation Enzymes Activities to Osmotic Stress in an Upland Rice Progeny YF2-1 Derived from Oryza sativa x Echinochloa caudata[J].Acta Agronomica Sinica,2011,37(5):876-881. |
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| Authors: | DING Zai-Song WANG Chun-Yan GUAN Dong-Ming ZHAO Feng-Wu ZHAO Ming |
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| Institution: | 1.Institute of Crop Sciences, Chinese Academy of Agricultural Sciences / Key Laboratory of Crop Physiology and Production, Ministry of Agriculture, Beijing 100081, China;2.Chemistry and Environment Engineering College, China University of Mining & Technology, Beijing 100083, China;3.Dry Land Farming Institute, Hebei Academy of Agriculture and Forestry Sciences, Hengshui 053000, China |
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| Abstract: | Wild species generally have higher stress resistance than cultivated crops and are utilized as the sources of stress resistance genes in stress resistance improvement of crops.In rice,its wild relatives have been used to improve photosynthesis,yield and stress resistance.YF2-1 is obtained by distant cross between Oryza sativa and Echinochloa caudate.In order to assess its osmotic stress resistance on physiological level,gas exchange,chlorophyll a fluorescence and antioxidation enzyme activities under osmoti... |
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| Keywords: | Upland rice Distant crossing Photosynthetic characteristics Osmotic stress |
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