| NaCl胁迫对美国白蜡幼苗部分生理指标的影响 |
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| 引用本文： | 于金平,俞珊,梁有旺,倪学军,任全进.NaCl胁迫对美国白蜡幼苗部分生理指标的影响[J].植物资源与环境学报,2014(1):110-112. |
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| 作者姓名： | 于金平 俞珊 梁有旺 倪学军 任全进 |
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| 作者单位： | [1]江苏省·中国科学院植物研究所（南京中山植物园）,江苏南京210014 [2]南京林业大学森林资源与环境学院,江苏南京210037 [3]盐城市园林管理局,江苏盐城224002 |
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| 基金项目： | 江苏省苏北科技发展计划资助项目（SDN201210151） |
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| 摘 要： | 美国白蜡(Fraxinus americana Linn.)为木犀科(Oleaceae)白蜡树属(Fraxinus Linn.)落叶乔木,原产加拿大南部和美国,其干形通直、树形美观,是水土保持和庭院绿化的优良树种1],具有较为突出的耐干旱和耐盐碱能力2]。目前对美国白蜡耐盐能力的研究主要集中于引种试验和树种对比方面2-4]。郝明灼等5]的研究结果显示:在NaCl胁迫条件下美国白蜡叶肉细胞超微结构无明显损伤,显示出较强的耐盐能力。为进一步探讨美国白蜡耐盐的生理机制,作者以美国白
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| 关 键 词： | NaCl胁迫 美国白蜡 相对电导率 MDA含量 渗透调节物质 |
Effect of NaCI stress on some physiological indexes of Fraxinus americana seedling |
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| YU Jinping,YU Shan,LIANG Youwang,NI Xuejun,REN Quanjin.Effect of NaCI stress on some physiological indexes of Fraxinus americana seedling[J].Journal of Plant Resources and Environment,2014(1):110-112. |
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| Authors: | YU Jinping YU Shan LIANG Youwang NI Xuejun REN Quanjin |
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| Institution: | 1. Institute of Botany, Jiangsu Province and the Chinese Academy of Sciences, Nanjing 210014, China; 2. College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China; 3. Gardens Bureau in Yancheng City, Yancheng 224002, China) |
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| Abstract: | Effect of 0 （CK）, 1, 3, 5 and 7 g · L-1 NaCl stress on relative conductivity and contents of MDA, proline, soluble protein and soluble sugar in leaf of Fraxinus americana Linn. seedling was studied by nutrient solution culture method. Results show that with rising of NaCl mass concentration, relative conductivity and contents of MDA and proline in leaf all are gradually increasing and are higher than those of the control ; soluble protein content appears a fluctuation trend with lower content under 7 g · L-1 NaCl stress than that of the control ; soluble sugar content generally appears a changing trend of first increasing and then deereasing, and is higher than that of the control. It is suggested that F. americana has a stronger tolerance to NaCl stress. |
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| Keywords: | NaCl stress Fraxinus americana Linn relative conductivity MDA content osmotic regulation substance |
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