不同浓度NaCl溶液胁迫对棉花种子萌发特性的影响

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中图分类号：S-3 文献标志码：A 文章编号：2096-9902（2025）12-0031-05

Abstract：Thisstudyivestigatedthegerminationcharacteristicsofcottonsedsunderdiferentsaltconcentrationstoprovide areferenceforimprovingsalttoleranceduring plantgermination.Usingeightcotonvarieties（H4，H18，H29，H35，H37，H38， H43andH52）asexperimentalmaterials，NaClsolutionconcentrationgradientsweresetatO.05，0.1，0.15，0.2andO.3mol/Lto determinetheefectsofNaCl stressoncotonseedgermination.UnderNaClstress，parameterssuchasrelativegerminationrate， seedfreshweight，relativegerminationpotentialseeddryweight，andrelativegerminationindexgenerallyshowedaninitial increase folowedbyadeclineassaltoncentrationincreased，indicatingthatlowsaltconcentrationspromotedseedgeination. Theresults revealed the following order of salt tolerance under NaCl stress：H4>H43>H35 > H38 > H52>H29>H18>H37. These findings provide a basis for selecting salt-tolerant coton varieties in Xinjiang's cotton production.

Keywords： cotton; seed germination; identification;salt tolerance; NaCl

土壤盐碱化是主要的非生物胁迫因素之一，严重限制了全球的农业生产，极大地影响了作物的产量与品质。（剩余6000字）