Polyethylene Glycol Priming Enhances the Seed Germination and Seedling Growth of Scutellaria baicalensis Georgi under Salt Stress
文献类型： 外文期刊
作者： Wang, Renjie 1 ; Li, Chenxuan 2 ; Zeng, Li 1 ; Liu, Ligong 3 ; Xi, Jiayi 1 ; Li, Jun 1 ;
作者机构： 1.Qingdao Agr Univ, Coll Agron, Qingdao 266109, Peoples R China
2.Capital Med Univ, Sch Tradit Chinese Med, Beijing 100069, Peoples R China
3.Beijing Acad Agr & Forestry Sci, Natl Engn Res Ctr Vegetables, Beijing Vegetable Res Ctr, Beijing 100097, Peoples R China
关键词： Scutellaria baicalensis Georgi; polyethylene glycol (PEG); seed priming; salt tolerance
期刊名称：PLANTS-BASEL （ 2022影响因子：4.5； 五年影响因子：4.8 ）
ISSN： 2223-7747
年卷期： 2024 年 13 卷 5 期
收录情况： SCI
摘要： Seed priming has become a practical pre-sowing strategy to deal with abiotic stresses. This study aims to explore the effects of polyethylene glycol (PEG) priming on seed germination and seedling growth of Scutellaria baicalensis Georgi under salt stress. Regardless of seed priming, salt stress significantly inhibited the seed germination and seedling growth of S. baicalensis. PEG priming significantly alleviates the inhibitory effects of salt stress on seed germination and seedling growth when compared to non-priming and water priming. Among all treatments, PEG priming exhibited the highest germination rate, germination potential, seed vigor index, fresh weight, dry weight, and plant length; the highest contents of proline, soluble sugar, and soluble protein; the highest K+/Na+ ratio and relative water content; the highest antioxidant activities and contents; but the lowest H2O2, malondialdehyde (MDA) content, and relative electrical conductivity in response to salt stress. In addition, PEG priming had the highest transcript levels of antioxidant-related genes among all treatments under NaCl stress. Taken together, the results demonstrated that seed priming with PEG could be recommended as an effective practice to enhance the germination and early seedling growth of S. baicalensis under saline conditions.
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