Responses of Root Morphology of Amorpha Fruticosa to NaCl Saline Stress

Zhang Jiapeng; Gao Yong; Dang Xiaohong; Zhang Ge; Wang Tao

doi:10.13961/j.cnki.stbctb.2020.02.008

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Responses of Root Morphology of Amorpha Fruticosa to NaCl Saline Stress

- Responses of Root Morphology of Amorpha Fruticosa to NaCl Saline Stress
- Bulletin of Soiland Water Conservation Vol. 40, Issue 2, Pages: 54-58(2020)
- 作者机构：
  
  1. 内蒙古农业大学沙漠治理学院,内蒙古,呼和浩特,010019
  2. 内蒙古自治区风沙物理学重点实验室,内蒙古,呼和浩特,010019
  3. 中国林业科学研究院沙漠林业试验中心, 内蒙古磴口,015200
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2020.02.008
  CLC： Q945.78
- Published：2020
- 稿件说明：
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Zhang Jiapeng, Gao Yong, Dang Xiaohong, et al. Responses of Root Morphology of Amorpha Fruticosa to NaCl Saline Stress[J]. Bulletin of Soiland Water Conservation, 2020, 40(2): 54-58.
DOI：

Zhang Jiapeng, Gao Yong, Dang Xiaohong, et al. Responses of Root Morphology of Amorpha Fruticosa to NaCl Saline Stress[J]. Bulletin of Soiland Water Conservation, 2020, 40(2): 54-58. DOI： 10.13961/j.cnki.stbctb.2020.02.008.

摘要

[目的] 探究紫穗槐幼苗根系形态对NaCl盐胁迫的适应特征，为盐渍化地区植被优化及恢复提供理论依据。[方法] 以1 a生紫穗槐幼苗为试材，分析紫穗槐幼苗株高、基径和根长、表面积、体积、根尖数等重要的根系形态特征指标。[结果] 随着盐浓度的增加，紫穗槐幼苗株高、基径和总根、中根各构型指标均呈现先升高后下降的趋势；盐浓度为0.3%时，除细根体积外，各指标达到最大值，且均表现显著促进作用（p<0.05）；盐浓度达到0.9%时，各指标受到了显著抑制（p<0.05）。[结论] 当盐浓度为0.3%时，对紫穗槐根系生长有促进作用；当盐浓度达到0.9%时，其生长明显受到抑制。

Abstract

[Objective] The adaption of Amorpha fruticosa through root morphological responses to saline stress was explored

in order to provide support for vegetation optimization and restoration in saline areas.[Methods] we used the annual Amorpha fruticosa seedlings as test materials

and analyzed plant height

basal diameter and the root morphological characteristics such as root length

surface area

volume

and number of root tips of Amorpha fruticosa seedlings under saline stress.[Results] As the salt concentration increases

the plant height

basal diameter

and total root and middle root configuration indexes of Amorpha fruticosa increased first and then decreased. When the saline concentration was 0.3%

except for the fine root volume

all other indexes reached the maximum value

and all showed significant promotion effects (p<0.05). When the saline concentration was 0.9%

all indicators were significantly inhibited (p<0.05).[Conclusion] When the saline concentration was 0.3%

the root growth of Amorpha fruticosa was significantly promoted; when the concentration was higher than 0.5%

the root system showed different degrees of growth declining; when the saline concentration reached 0.9%

its growth was significantly inhibited.

关键词

Keywords

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