Effect of Sodium Salt Stress on Seed Germination Characteristics of

ZHAO Ting; LI Jing; PENG Liang; HU Ben-xiang; WANG Yuan-yuan; AN Yan-ru; HUANG Tao

doi:10.13422/j.cnki.syfjx.20181110

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Effect of Sodium Salt Stress on Seed Germination Characteristics of

更新时间：2024-01-04

- Effect of Sodium Salt Stress on Seed Germination Characteristics of
- Chinese Journal of Experimental Traditional Medical Formulae Vol. 24, Issue 17, Pages: 60-67(2018)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.13422/j.cnki.syfjx.20181110
  CLC： S567.239
- Published：2018
- 稿件说明：
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ZHAO Ting, LI Jing, PENG Liang, et al. Effect of Sodium Salt Stress on Seed Germination Characteristics of [J]. Chinese journal of experimental traditional medical formulae, 2018, 24(17): 60-67.
DOI：

ZHAO Ting, LI Jing, PENG Liang, et al. Effect of Sodium Salt Stress on Seed Germination Characteristics of [J]. Chinese journal of experimental traditional medical formulae, 2018, 24(17): 60-67. DOI： 10.13422/j.cnki.syfjx.20181110.

摘要

目的：通过研究不同钠盐胁迫下远志种子的萌发特性，为盐碱地中远志的前期育苗提供参考，提高远志的产量，促进盐碱地的高效利用。方法：采用单盐NaCl，Na2CO3，Na2SO4和混合盐NaCl+Na2SO4，NaCl+Na2CO3，Na2CO3+Na2SO4，NaCl+Na2CO3+Na2SO4不同钠盐溶液对远志种子的发芽过程进行胁迫，以蒸馏水为对照，每天统计并记录发芽数，计算发芽率，发芽势，发芽指数和活力指数，发芽结束后测量株高，根长，鲜重及干重。结果：当NaCl浓度≥ 150 mmol·L-1，混合盐Na+（NaCl+Na2SO4）浓度≥ 50 mmol·L-1，混合盐Na+（NaCl+Na2CO3）浓度≥ 100 mmol·L-1，混合盐Na+（Na2CO3+Na2SO4）浓度≥ 25 mmol·L-1，混合盐Na+（NaCl+Na2CO3+Na2SO4）浓度≥ 50 mmol·L-1时，处理组的发芽率显著低于蒸馏水组（P<0.05），显著抑制远志种子的发芽。当Na2CO3浓度≥ 5 mmol·L-1时，种子的发芽率与蒸馏水组相比显著降低（P<0.05），显著抑制远志种子的发芽，且随着浓度的增大，抑制作用逐渐增强。结论：低浓度的NaCl，Na2SO4，NaCl+Na2SO4，NaCl+Na2CO3，Na2CO3+Na2SO4，NaCl+Na2CO3+Na2SO4盐溶液对远志种子的萌发无影响，随着浓度的增大，对远志种子的发芽有显著的抑制作用。单盐Na2CO3溶液对种子发芽的抑制作用最强，Na2CO3 ≥ 5 mmol·L-1时对远志种子的萌发具有显著的抑制作用，且随着胁迫浓度的增大，抑制作用逐渐增强。

Abstract

Objective:To provide reference for the early seedling cultivation of Polygala tenuifolia in saline alkali soil

improve the yield of P. tenuifolia

and promote the efficient utilization of saline alkali soil by studying the germination characteristics of P. tenuifolia seeds under different sodium salt stress conditions. Method:P. tenuifolia seed germination was stressed with the single salt NaCl

Na2CO3

Na2SO4 and mixed salt NaCl+Na2SO4

NaCl+Na2CO3

Na2CO3+Na2SO4

NaCl+Na2CO3 +Na2SO4 salt solution

with distilled water as the control. The number of germination was counted and recorded everyday; the germination potential

germination rate

germination index and vigor index were calculated; the root height

shoot height

fresh weight and dry weight were measured after germination. Result:When the NaCl concentration ≥ 150 mmol·L-1

Na+ mixed salt (NaCl+Na2SO4)concentration ≥ 50 mmol·L-1

Na+ mixed salt(NaCl+Na2CO3)concentration ≥ 100mmol·L-1

Na+ mixed salt(Na2CO3+Na2SO4) concentration ≥ 25 mmol·L-1

Na+ mixed salt(NaCl+Na2CO3+Na2SO4)concentration ≥ 50 mmol·L-1

the germination rate of treatment group was significant lower than that of the control group(P<0.05)

significantly inhibiting the germination of seeds.When the Na2CO3 concentration ≥ 5 mmol·L-1

the germination rate of the seed was significantly lower than that of the control group(P<0.05)

significantly inhibiting the germination of seeds of P. tenuifolia

and the inhibitory effect was gradually increased with the increase of concentration. Conclusion:The results showed that low concentration of NaCl

Na2SO4

NaCl+Na2SO4

NaCl+Na2CO3

Na2CO3 +Na2SO4

NaCl+Na2CO3 +Na2SO4 salt solution had no effect on germination of seeds

but with the increase of concentration

they had obvious inhibitory effect on the germination of seeds. Single salt Na2CO3 solution had the strongest inhibitory effect on seed germination;Na2CO3 ≥ 5 mmol·L-1 had significant inhibitory effecton germination of seeds

and the effect was gradually increasedwith the increase of stress concentration.

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