|Table of Contents|

Effects of Water Potential and Salt Stress on Seed Germination and Root Growth in Arabidopsis

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年15
Page:
8-14
Research Field:
Publishing date:

Info

Title:
Effects of Water Potential and Salt Stress on Seed Germination and Root Growth in Arabidopsis
Author(s):
GAO Runxin1; 2; HUANG Fengzhen1; 2; LI Meng1; 2; PENG Jiqing1; 2; DONG Xujie1; 2; CAO Fuxiang3
(1.College of Life Science and Technology,Central South University of Forestry and Technology,Changsha,Hunan 410018；2.Hunan Research Center of Engineering Technology for Utilization of Environmental and Resources Plant,Changsha,Hunan 410018;3.Horticulture & Landscape College,Hunan Agricultural University,Changsha,Hunan 410004)
Keywords:
Arabidopsis; salt stress; water potential
PACS:
-
DOI:
10.11937/bfyy.20184111
Abstract:
To clarify the effects of salt stress and water potential on seed germination and seedling growth in Arabidopsis. NaCl and PEG-6000 with different concentration was added into medium,respectively,to simulate salt stress and water potential of different degree.The effects on seed germination rate,root length,survival rate of seedling and MDA content in seedling were measured.The results showed that while the concentration of NaCl solution was equal to or higher than 150 mmol?L-1 the average root length of treated group was 5.2 mm,which was significantly less than that (24.8 mm) in the control group.The average seedling survival rate was 52.1%,which was significantly less than that (98.1%) in the control group.When the water potential was less than -0.7 MPa,the average seedling survival rate was 89.2%,which was significantly less than that (98.7%) in the control group.Moreover,there was no lateral root in Arabidopsis seedlings growing under -0.7 MPa of water potential.In conclusion,the 150 mmol?L-1 concentration of NaCl and -0.7 MPa were the thresholds for salt stress and water potential,respectively,to cause inhibiting effects on seed germination and seedling growth in Arabidopsis.

References:

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Last Update: 2019-08-15