| 盐胁迫对黄瓜不同耐盐品种叶绿素含量和叶绿体超微结构的影响 |
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| 引用本文： | 张景云,吴凤芝.盐胁迫对黄瓜不同耐盐品种叶绿素含量和叶绿体超微结构的影响[J].中国蔬菜,2009,1(10):13-16. |
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| 作者姓名： | 张景云 吴凤芝 |
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| 作者单位： | 东北农业大学园艺学院，哈尔滨 150030 |
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| 摘 要： | 用浓度为225 mmol·L-1的NaCl溶液对黄瓜不同耐盐品种进行处理，研究NaCl胁迫对黄瓜不同耐盐品种叶绿素含量及叶绿体超微结构的影响。结果表明，在一定盐浓度下，耐盐品种在盐胁迫初期变化不明显，随着盐胁迫时间的延长，耐盐品种和盐敏感品种叶绿素含量降低显著，但耐盐品种比盐敏感品种降低幅度小；同时盐胁迫对叶绿体的膜系统产生伤害，叶绿体老化加快，片层逐渐解体，外形轮廓发生变化，内部片层排列方向发生改变，并发生轻微膨胀，基粒片层数目减少，内部结构趋向简单，以至瓦解，耐盐品种的变化程度小于盐敏感品种。
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| 关 键 词： | 盐胁迫 黄瓜 叶绿素含量 叶绿体超微结构 |
| 收稿时间： | 2008-09-06; |
Effects of Salt Stress on Chlorophyll Content and Chloroplast Ultra-structure of Different Salt-tolerant Cucumber Varieties |
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| ZHANG Jing-yun,WU Feng-zhi.Effects of Salt Stress on Chlorophyll Content and Chloroplast Ultra-structure of Different Salt-tolerant Cucumber Varieties[J].China Vegetables,2009,1(10):13-16. |
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| Authors: | ZHANG Jing-yun WU Feng-zhi |
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| Institution: | College of Horticulture,Northeast Agricultural University,Harbin 150030,Heilongjiang,China |
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| Abstract: | Taking concentration of 225 mmol·L-1 NaCl solution to treat different salt-tolerant cucumber varieties,the effects of salt stress on chlorophyll content and chloroplast ultra-structure were studied.The results showed that under certain concentration of NaCl,at the initiate stage of salt stress,there were not many changes in salt-tolerant varieties.The chlorophyll contents of salt-tolerant and salt-sensitive varieties decreased significantly as salt stress last for a long time,but the decrease range of salt-tolerant varieties is smaller than that of salt-sensitive varieties.At the same time,salt stress could harm the chloroplast membrane system,accelerate the aging of chloroplast,disintegrating gradually the layer,shaping the contour changes,and changing the linage direction of internal layers,and arising a minor expansion,decreasing the number of tablets layers,simplifying the internal structure until total collapse.But the changing degree of salt-tolerant varieties is less than that of salt-sensitive varieties. |
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