| 不同抗盐性小麦叶鞘的Na+/K+选择性 |
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| 引用本文： | 丁同楼,段培,王宝山. 不同抗盐性小麦叶鞘的Na+/K+选择性[J]. 植物生理与分子生物学学报, 2006, 32(1): 123-126 |
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| 作者姓名： | 丁同楼 段培 王宝山 |
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| 作者单位： | 山东师范大学生命科学学院,济南,250014 |
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| 基金项目： | 中国科学院资助项目;国家科技攻关项目 |
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| 摘 要： | 以200mmol／LNaCl处理耐盐小麦（Triticum aestivum L．）品种DK961和盐敏感小麦品种LM153d后，DK961叶鞘中Na^＋含量和叶片中K^＋含量均显著高于LMl5，这造成DK961叶片中Na^＋／K^＋比显著低于LM15。即DK961的叶鞘以其较LM15更强的限制Na^＋、推动K^＋向叶片运输的能力来保持叶片相对较低的Na^＋／K^＋比，即叶鞘在小麦抗盐性中可能起重要作用。
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| 关 键 词： | NaCl胁迫 Na /K 选择性 叶鞘 小麦 |
| 收稿时间： | 2005-03-09 |
| 修稿时间： | 2005-11-12 |
Na+/K+ Selectivity of Leaf Sheath in Wheat Cultivars Differing in Salt Tolerance |
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| DING Tong-Lou,DUAN Pei,WANG Bao-Shan. Na+/K+ Selectivity of Leaf Sheath in Wheat Cultivars Differing in Salt Tolerance[J]. Journal Of Plant Physiology and Molecular Biology, 2006, 32(1): 123-126 |
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| Authors: | DING Tong-Lou DUAN Pei WANG Bao-Shan |
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| Affiliation: | College of Life Sciences, Shandong Normal University, Jinan 250014, China |
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| Abstract: | A salt-tolerant wheat cultivar (DK961) and asalt-sensitive one (LM15) were exposed to 200 mmol/LNaCl for 3 d to study selectivity in transport of K+ andNa+ of the leaf sheath. Na+ content of leaf sheath and K+content of leaf blade of DK961 were significantly higherthan those of LM15, which led to a lower Na+/K+ ratio ofleaf blade of DK961 than that of LM15. These resultssuggested that leaf sheath of DK961 had much strongerabilities of limiting Na+ transport and allowing K+ trans-port from leaf sheath to leaf blade than that of LM15 tomaintain lower Na+/K+ ratio of leaf blade under NaClstress, indicating that leaf sheath may play an importantrole in wheat salt tolerance. |
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| Keywords: | NaCl stress Na /K selectivity leaf sheath wheat |
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