Physiological and Growing Response of Carpinus Betulus Seedlings to Salt Stress

ZHOU Qi; SHENG Qianqian; ZHU Zunling

doi:10.13961/j.cnki.stbctb.2015.03.022

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Physiological and Growing Response of Carpinus Betulus Seedlings to Salt Stress

- Physiological and Growing Response of Carpinus Betulus Seedlings to Salt Stress
- Bulletin of Soiland Water Conservation Vol. 35, Issue 3, Pages: 88-94(2015)
- 作者机构：
  
  1. 南京林业大学风景园林学院,江苏,南京,210037
  2. 南京林业大学艺术设计学院,江苏,南京,210037
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2015.03.022
  CLC：
- Published：2015
- 稿件说明：
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ZHOU Qi, SHENG Qianqian, ZHU Zunling. Physiological and Growing Response of Carpinus Betulus Seedlings to Salt Stress[J]. Bulletin of Soiland Water Conservation, 2015, 35(3): 88-94.
DOI：

ZHOU Qi, SHENG Qianqian, ZHU Zunling. Physiological and Growing Response of Carpinus Betulus Seedlings to Salt Stress[J]. Bulletin of Soiland Water Conservation, 2015, 35(3): 88-94. DOI： 10.13961/j.cnki.stbctb.2015.03.022.

摘要

[目的] 探讨欧洲鹅耳枥(Carpinus betulus)对盐胁迫的响应及其耐盐性。[方法] 以两年生欧洲鹅耳枥幼苗为材料

用不同浓度NaCl(0%

0.1%

0.2%

0.3%

0.4%

0.5%)溶液处理幼苗

研究不同盐分胁迫对其幼苗生长及生理生化指标的影响。[结果] (1) 随着盐胁迫的加剧

欧洲鹅耳枥幼苗受到损害程度逐渐加重

相对苗高生长、相对地径生长和总干重均呈下降趋势

而根冠比则逐渐增大; (2) 叶片相对含水量随着盐胁迫程度的增加而下降

且盐浓度越高

时间越久

变化幅度越大; (3) 叶片叶绿素总量、SOD活性、POD活性、可溶性糖含量和可溶性蛋白含量随着盐胁迫程度的增加表现出先升高后降低的趋势; (4) 随着盐浓度的增加和盐害时间的持续

幼苗叶片MDA含量、相对电导率和脯氨酸含量总体上呈增大趋势

并在胁迫末期达到最大值。[结论] 欧洲鹅耳枥幼苗在0.1%~0.2%盐胁迫下能通过调节保护酶活性和渗透调节物质来减轻危害;而在0.3%胁迫下

幼苗自我调节能力受影响

0.4%~0.5%胁迫对其造成严重的损害

表明欧洲鹅耳枥耐盐性较弱

不宜在滨海地区生长。

Abstract

[Objective] To explore the response of Carpinus betulus to salt stress and its salt tolerance. [Methods] Using two year seedlings of C. betulus as experimental material

the growth

physiological and biochemical responses of C. Betulus were studied under different concentrations of NaCl(0%

0.1%

0.2%

0.3%

0.4%

0.5%). [Results] (1) With salt stress increasing

the damage of plant gradually increased

relative height

and relative diameter and dry weight tended to decline

but root/shoot ratio was increased. (2) Relative water content decreased as salt stress increasing

and the ranges were greater as the salt degrees became higher. (3) The variation trends of total chlorophyll content

SOD activities

POD activities

soluble sugar content and soluble protein content were increased at first then decreased. (4) With the period of salt stress continued

MDA content

relative conductivity and proline content increased

and reached a maximum at last. [Conclusion] C. betulus seedings can improve the characteristics of resistance to salt stress by increasing the activities of protective enzyme system and osmotic adjustment substance under NaCl concentration of 0.1%~0.2%

but its self-regulation ability will be affected under 0.3% NaCl concentration

severe salt stress(0.4%~0.5%) will cause serious damage to the plants. It indicated that C. betulus is vulnerable to salt conditions

and it can not grow well in coastal areas.

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