| 等渗Ca(NO_3)_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(NO_3)_2和NaCl对番茄幼苗生长的影响[J].园艺学报,2001(1). |
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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华南热带农业大学园艺学院，海南儋州571737，浙江大学园艺系!杭州310029，浙江大学园艺系!杭州310029，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 !(39830 2 30 ) |
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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。 2 8、 56mmol/LCa(NO3) 2 溶液对其生长的抑制作用小于等渗的NaCl溶液 ,而 84mmol/LCa(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(NO_3)_2 NaCl 盐效应 |
Effect of Iso osmotic Ca(NO_3)_2 and NaCl on Growth of Tomato Seedlings |
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| Liu Zhiyuan,Zhu Zhujun,Qian Yarong,and Yu Jingquan.Effect of Iso osmotic Ca(NO_3)_2 and NaCl on Growth of Tomato Seedlings[J].Acta Horticulturae Sinica,2001(1). |
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| Authors: | Liu Zhiyuan Zhu Zhujun Qian Yarong and Yu Jingquan |
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| Abstract: | The tomato seedlings had different responses to iso osmotic Ca(NO 3) 2 and NaCl solution.The reduction of plant growth under 28 and 56mmol/L Ca(NO 3) 2 solution was greatly smaller than those under iso osmotic NaCl solution,but under 84mmol/L Ca(NO 3) 2 solution the inhibition was the same as that under the iso osmotic NaCl solution.The plant growth was inhibited by high concentration of Ca(NO 3) 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(NO_3)_2 NaCl Salt response |
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