|Table of Contents|

Effects of Salicylic Acid on Seed Germination and Seedling Growth of Pepper Under Salt Stress

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年08
Page:
1-6
Research Field:
Publishing date:

Info

Title:
Effects of Salicylic Acid on Seed Germination and Seedling Growth of Pepper Under Salt Stress
Author(s):
WANG Ying; WANG Long; MA Jing; LIN Duo; YANG Yanjie
(College of Horticulture，Qingdao Agricultural University,Key Laboratory of Horticultural Plant Genetic Improvement and Breeding of Qingdao,Qingdao,Shandong 266109)
Keywords:
pepper; salt stress; salicylic acid; germination stage; seedling stage
PACS:
-
DOI:
10.11937/bfyy.20192908
Abstract:
To investigate the role of exogenous salicylic acid (SA) in alleviating the damage of salt stress on crops and improving the utilization of medium and light saline-alkali soils，the pepper seedlings under NaCl stress were treated with SA，and the seed germination and seedling stages were studied by soaking and hydroponic methods respectively in this study.The results showed that salt stress could inhibit the germination and seedling growth of pepper.When the concentration of SA was 015 mmol·L-1，the germination potential and germination percentage of the seeds were the highest，and the effect of alleviating salt stress damage was the best.The net photosynthetic rate (Pn) and the stomatal conductance (Gs) decreased significantly and the intercellular CO2 concentration (Ci) of pepper seedlings continued to increase under salt stress treated with SA，indicated SA could alleviate the inhibition of on plants under salt stress and improve the photosynthesis efficiency of leaves.Meanwhile，compared with NaCl treatment，the chlorophyll content of SA treatment increased by 51%，34% and 40% for 3，6 and 9 days，respectively，showed that SA could alleviate pepper seedlings damage under salt stress，promote the synthesis of chlorophyll，protect photosynthesis system and maintain the normal growth of plants.

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Last Update: 2020-07-04