盐胁迫下外源赤霉素对玉米幼苗生长的缓释作用

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中图分类号：S513 文献标识码：A DOI编码：10.3969/j.issn.1006—6500.2025.02.004

TheAlleviating Effect of Exogenous Gibberellinon Maize Seedling Growth Under Salt Stress QIAO Jiao

（ColegetEnotdLees，lesityoectroceedoognla） Abstract：Toxpellvatingtofogeousrelln）oaltsrs，ntocntatisofG（O and ） were appliedunderthesalt stresssimulatedby sodiumchloride，andwe measured the morphologicaland physiological indexes of corn seedlings .The research results showed that exogenous increased the leaf area，plant height，root length，and numberfrottipsofconsedlingsundersalt stressimprovedtheactivitiesofperoxidase（POD）andsuperoxidedismutase（SOD）， thecontentsofsolublesugarsandtherelativecontentsofchlorophyllHwever，itreducedthecontentofmalondialdehyde（MDA）.I conclusion， after spraying on seedlings，the impact of salt stresson the growth and development of seedlings is significantly weakenedbyincreasing thephysiologicalactivityofsedlings，andthealleviating effectisthemostobviousataconcentrationof ： Key words： corn; salt stress; gibberellin; seedlings grow

受气候变化和破坏性开垦耕种影响，土壤盐渍化在全球范围内不断加剧，已成为限制农业生产的重要因素。（剩余9387字）