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园艺学报 ›› 2001, Vol. 28 ›› Issue (1): 31-35.

• 研究论文 • 上一篇    下一篇

等渗Ca(NO3)2和NaCl对番茄幼苗生长的影响

刘志媛*;朱祝军**;钱亚榕;喻景权   

  1. (浙江大学园艺系, 杭州310029)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2001-02-25 发布日期:2001-02-25

Effect of Iso-osmotic Ca(NO3)2 and NaCl on Growth of Tomato Seedlings

Liu Zhiyuan, Zhu Zhujun, Qian Yarong, and Yu Jingquan   

  1. (Department of Horticulture , Zhejiang University , Hangzhou 310029)
  • Received:1900-01-01 Revised:1900-01-01 Online:2001-02-25 Published:2001-02-25

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。

关键词: 番茄, 盐分胁迫, 盐害, Ca(NO3)2, NaCl, 盐效应

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.

Key words: Tomato, Salt stress, Salt toxicity, Ca (NO3) 2, NaCl, Salt response

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