| 赤霉素对盐胁迫下水稻种子发芽及幼苗生长的影响 |
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| 引用本文： | 尹昌喜,汪献芳,金莉,吴全荣,邓林,李荣伟.赤霉素对盐胁迫下水稻种子发芽及幼苗生长的影响[J].安徽农业科学,2009,37(14):6389-6390. |
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| 作者姓名： | 尹昌喜 汪献芳 金莉 吴全荣 邓林 李荣伟 |
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| 作者单位： | 华中农业大学植物科学技术学院,湖北武汉,430070;华中农业大学理学院,湖北武汉,430070 |
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| 基金项目： | 国家自然科学基金，教育部博士点新教师基金，华中农业大学人才启动基金 |
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| 摘 要： | 目的]研究赤霉素对盐胁迫下水稻种子发芽及幼苗生长的影响。方法]采用60～210 mmol/L的NaCl作为不同浓度的盐胁迫，结合10μmol/L GA3处理，考察珍汕97水稻种子发芽及幼苗生长状况。结果]大于等于60mmol/L的NaCl胁迫显著抑制水稻种子发芽及幼苗生长，而10μmol/L GA3处理能显著缓解小于等于90mmol/L的NaCl胁迫对活力指数、第1片真叶叶鞘生长、株高生长的影响，显著缓解90～150mmol/L的NaCl胁迫对种子根生长的影响，显著缓解小于等于180mmol/L的NaCl胁迫对发芽势、发芽指数的影响，并显著缓解120～210mmol/L的NaCl胁迫对发芽率的影响。结论]10μmol/L GA3处理能显著缓解一定浓度范围内的盐胁迫对水稻种子发芽及幼苗生长的抑制作用。
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| 关 键 词： | 赤霉素 盐胁迫 水稻 种子发芽 幼苗生长 |
Effects of GA on Seed Germination and Seedling Growth of Rice under Salt Stress |
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| Institution: | YIN Chang-xi et al ( College of Plant Science and technology, Huazhong Agricultural University, Wuhan, Hubei 430070) |
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| Abstract: | Objective]The research aimed to study the effects of GA on seed germination and seedling growth of rice under salt stress.Method] 60-210 mmol/L NaCl were selected for different salt stress treatments,and plus 10 μmol/L GA3 treatment,the results of seed germination and seedling growth of rice Zhenshan 97 were examined.Result] Not less than 60 mmol/L NaCl stress remarkably inhibited seed germination and seedling growth of rice,while GA3 treatment remarkably alleviated the inhibition effects from not more than 90 mmol/L NaCl stress on activity index,fist true leaf sheath growth and plant height growth;remarkably alleviated the inhibition effects from NaCl stress with concentrations from 90 mmol/L to 150 mmol/L on seminal root growth;remarkably alleviated the inhibition effects from not more than 180 mmol/L NaCl stress on germination potential and germination index;and remarkably alleviated the inhibition effects from NaCl stress with concentrations from 120 mmol/L to 210 mmol/L on germination rate.Conclusion]The treatment with 10 μmol/L GA3 could remarkably alleviate the inhibition effects of salt stress with a certain concentration range on seed germination and seedling growth of rice. |
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| Keywords: | GA Salt stress Rice Seed germination Seedling growth |
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