對鹽脅迫的緩釋效應(yīng)，鹽脅迫下施加不同濃度 <img src="/qkimages/tjny/tjny202502/tjny20250204-2-l.jpg" with="207px" style="vertical-align: middle;"> 處理，測定玉米幼苗形態(tài)指標(biāo)和生理指標(biāo)。結(jié)果表明：外源 <img src="/qkimages/tjny/tjny202502/tjny20250204-3-l.jpg" with="31px" style="vertical-align: middle;"> 增加了鹽脅迫下玉米幼苗的葉面積、株高、根長及根尖數(shù)，提高了過氧化物酶(POD)活性、超氧化物歧化酶(SOD)活性、可溶性糖含量、葉綠素相對含量,降低了丙二醛(MDA)含量。綜上,噴施 <img src="/qkimages/tjny/tjny202502/tjny20250204-3-l.jpg" with="31px" style="vertical-align: middle;"> 后,幼苗生理活性提高，鹽脅迫對幼苗生長發(fā)育的影響明顯減弱,緩解效應(yīng)以濃度為 <img src="/qkimages/tjny/tjny202502/tjny20250204-5-l.jpg" with="75px" style="vertical-align: middle;"> 最為明顯。-龍源期刊網(wǎng)" />

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鹽脅迫下外源赤霉素對玉米幼苗生長的緩釋作用

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中圖分類號：S513 文獻標(biāo)識碼：A DOI編碼：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

受氣候變化和破壞性開墾耕種影響，土壤鹽漬化在全球范圍內(nèi)不斷加劇，已成為限制農(nóng)業(yè)生產(chǎn)的重要因素。（剩余9387字）

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