| 外源亚精胺对NaCl胁迫下黄瓜幼苗耐盐性的影响 |
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| 引用本文： | 段九菊,郭世荣.外源亚精胺对NaCl胁迫下黄瓜幼苗耐盐性的影响[J].中国蔬菜,2005,1(12):8-10. |
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| 作者姓名： | 段九菊 郭世荣 |
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| 作者单位： | 南京农业大学园艺学院; |
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| 基金项目： | 国家“863”项目(2004AA247010)，江苏省农业三项工程项目〔SX(2003)054〕，高等学校博士点科研基金(20050307031) |
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| 摘 要： | 在水培条件下,研究了营养液中不同浓度亚精胺对50mmol.L-1NaCl短期胁迫下黄瓜幼苗耐盐性的影响。结果表明,低浓度(0.01～0.10mmol.L-1)亚精胺可以促进NaCl胁迫下幼苗的生长,提高叶片净光合速率及气孔导度,缓解叶绿素在单位叶面积中的积累以及根系活力的升高,提高耐盐性;而高浓度的亚精胺有抑制效应。提高黄瓜幼苗抗盐胁迫能力的最适亚精胺浓度为0.10mmol.L-1。
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| 关 键 词： | 黄瓜幼苗 盐胁迫 亚精胺 |
| 收稿时间： | 2005-02-02 |
| 修稿时间： | 2005-02-02 |
Effects of Exogenous Spermidine on Salt Tolerance of Cucumber Seedlings under NaCl Stress |
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| Duan Jiuju,Guo Shirong.Effects of Exogenous Spermidine on Salt Tolerance of Cucumber Seedlings under NaCl Stress[J].China Vegetables,2005,1(12):8-10. |
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| Authors: | Duan Jiuju Guo Shirong |
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| Institution: | College of Horticulture; Nanjing Agricultural University; Jiangsu 210095 |
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| Abstract: | The effects of different concentration of exogenous spermidine (Spd) on salt tolerance of cucumber seedlings under 50 mmol·L -1 NaCl stress were studied in solution culture system.The results showed that low concentration (0.01-0.10 mmol·L -1 ) Spd treatments increased plant growth, net photosynthesis rate and stomatic conductance, and decreased chlorophyll content and root vitality, while high concentration of Spd inhibited growth of seedlings under salt stress.The most suitable concentration of exogenous ... |
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| Keywords: | Cucumber seedlings Salt stress Spermidine (Spd) |
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