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| D-精氨酸对渗透胁迫下水稻幼苗多胺含量和抗旱性的影响 | |
| 引用本文： | 周小梅 张 擎 赵运林 周朴华 李小湘. D-精氨酸对渗透胁迫下水稻幼苗多胺含量和抗旱性的影响[J]. 中国农学通报, 2010, 26(21): 156-159 |
| 作者姓名： | 周小梅 张 擎 赵运林 周朴华 李小湘 |
| 作者单位： | 1. 湖南城市学院建筑与城市规划学院,湖南,益阳,413000 2. 湖南城市学院经济管理系,湖南,益阳,413000 3. 湖南农业大学生物科学与技术学院,长沙,410128 4. 湖南省水稻研究所,长沙,410125 |
| 基金项目： | 湖南省科技厅重点资助项目"洞庭湖滨岸带受损生态系统的植物修复优化模式研究" |
| 摘 要： | 摘要：以 ‘湘早籼32号’和 ‘旱116’为材料，研究渗透胁迫下外源D-Arg对水稻幼苗多胺含量和抗旱性的影响。结果表明，渗透胁迫下，外源D-Arg明显抑制水稻幼苗相对干重增长率和根系中Put、Spd和Spm含量的升高，而对株高相对增长率影响不明显。外源D-Arg+Put明显促进幼苗相对干重增长率和根系中Put、Spd和Spm含量的升高，且促进株高相对增长率的增加。表明，外源D-Arg不利于水稻幼苗抗旱性的提高，且Put能逆转D-Arg的抑制效应。 |
| 关 键 词： | 氯化胆碱 氯化胆碱 香蕉苗 持续降温 生理指标 |
| 收稿时间： | 2010-03-22 |
| 修稿时间： | 2010-06-23 |
Effect of Exogenous D-Arg on Polyamine Contents and Drought-Resistance in Rice Seedlings Under Osmotic Stress |
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| Zhou Xiaomei,Zhang Qing,Zhao Yunlin,Zhou Puhua,Li Xiaoxiang. Effect of Exogenous D-Arg on Polyamine Contents and Drought-Resistance in Rice Seedlings Under Osmotic Stress[J]. Chinese Agricultural Science Bulletin, 2010, 26(21): 156-159 | |
| Authors: | Zhou Xiaomei Zhang Qing Zhao Yunlin Zhou Puhua Li Xiaoxiang |
| Affiliation: | 1 College of Architecture and Urban Planning,Hunan City University,Yiyang Hunan 413000;2 Department of Economics and Management,Hunan City University,Yiyang Hunan 413000;3 Bioscientific and Technological College,Hunan Agricultural University,Changsha 410128;4 Hunan Rice Research Institute,Changsha 410125) |
| Abstract: | To probe into the mechanism by which polyamines enhanced the tolerance of rice to drought,rice cultivars of ＇ Xiangzaoxian32 ＇ and ＇ Han116 ＇ were used as experimental materials,the effects of exogenous D-Arg on the polyamine contents and drought-resistance of rice seedlings under osmotic stress were investigated.The results showed exogenous D-Arg treatment significantly inhibited seedling relative dry weight increase rate and the contents of Put,Spd and Spm in seedling roots,but did not significantly effect height relative increase rate.Exogenous D-Arg＋Put could markedly promote seedling relative dry weight increase rate and the contents of Put,Spd and Spm in seedling roots and height relative increase rate.It indicated that exogenous D-Arg decreased drought-resistance of rice seedlings,and Put could reverse the effects of D-Arg. |
| Keywords: | polyamine D-Arg osmotic stress drought-resistance rice |
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