| 等渗Ca(NO3)2和NaCl对番茄幼苗生长的影响 |
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| 引用本文： | 刘志媛,朱祝军,钱亚榕,喻景权.等渗Ca(NO3)2和NaCl对番茄幼苗生长的影响[J].园艺学报,2001,28(1):31-35. |
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| 作者姓名： | 刘志媛 朱祝军 钱亚榕 喻景权 |
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| 作者单位： | (浙江大学园艺系, 杭州310029) |
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| 基金项目： | 国家自然科学基金重点资助项目(39830230) |
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| 摘 要： | 等渗Ca(NO3)2和NaCl溶液对番茄幼苗具有不同的盐效应。28、56 mmol/L Ca (NO3)2溶液对其生长的抑制作用小于等渗的NaCl 溶液, 而84 mmol/L Ca (NO3)2溶液对幼苗生长的抑制程度与等渗的NaCl 溶液无显著差异。Ca(NO3)2主要通过渗透胁迫影响植株生长;而NaCl主要通过离子胁迫抑制植株的生长, 包括细胞质膜结构的破坏和K吸收的减少。
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| 关 键 词： | 番茄 盐分胁迫 盐害 Ca(NO3)2 NaCl 盐效应 |
| 文章编号： | 0513-353X(2001)01-0031-05 |
| 修稿时间： | 2000年4月3日 |
Effect of Iso-osmotic
Ca(NO3)2 and NaCl on Growth of Tomat o Seedlings |
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| Liu Zhiyuan.Effect of Iso-osmotic
Ca(NO3)2 and NaCl on Growth of Tomat o Seedlings[J].Acta Horticulturae Sinica,2001,28(1):31-35. |
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| Authors: | Liu Zhiyuan |
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| Institution: | (Department of Horticulture , Zhejiang University , Hangzhou 310029) |
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| Abstract: | The tomato seedlings had different responses to iso-osmotic Ca(NO3)2 and NaCl solution. The reduction of plant growth under 28 and 56 mmol/ L Ca(NO3)2 solution was greatly smaller than those under iso2osmotic NaCl solution , but under 84 mmol/ L Ca(NO3)2 solution the inhibition was the same as that under the iso2osmotic NaCl solution. The plant growth was inhibited by high concentration of Ca(NO3)2 mainly through osmotic stress. Ion stress is the main reason of growth inhibition under NaCl : including destroy of membrane structure and reduction of potassium uptake. |
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| Keywords: | Tomato Salt stress Salt toxicity Ca (NO3 2 NaCl Salt response |
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