氧化型谷胱甘肽引发对甜菜种子萌发及幼苗生理特性的影响

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中图分类号：S566.3 文献标识码：A 文章编号：1000-4440（2025）10-1899-08

Abstract：To clarifythe effects of oxidized glutathione（GSSG）priming on seed germination abilityand seedling physiologicalcharacteristicsofsugarbeet，theseedsofsugarbeet8O1wereusedastheexperimentalmaterialinthis study. Six different mass concentrations（ 10mg/L ， 20mg/L ， 50mg/L ， 100mg/L ，200 mg/L，500 mg/L）of GSSG solution and two durations（16h and 24 h）of priming treatment wereset up to analyze their effects on seed germination ability and seedling physiological indexes of sugar beet. The results showed that compared with the non-soaked control（CK），thegerminationindexandvigorindexof sugarbeet seedswere significantly increased，and the conductivity of sugar beet seedswasdecreased bypriming with different concentrations of GSSG solution for 16 hand 24 h，but there was no significant effect on germination rate. Under different priming treatments，the antioxidant enzyme activity，malondialdehyde（MDA）contentand H2O2 content of sugarbeet seedlings changed greatly.Compared with CK，treatmentswith 20mg/L ， 50mg/L ， 100mg/L GSSG s0- lutionfor priming 24hcould significantly improve theantioxidant enzymeactivityofsugar beet seedlings，reduce H2O2 content and MDA content，while treatments with10 mg/L and 2O mg/L GSSG solution for priming 16h ， 200mg/L and 500 mg/L GSSG solution for priming 24 h could reduce the antioxidant enzyme activity， increase H2O2 content and MDA content.The soluble sugar contentand soluble protein contentofsugar bet seedlings under most primingtreatmentsshowed an increasing trend. In conclusion，most GSSG priming treatments can improve seed vigor byrepairing membrane damage， regulating oxidative stress and promoting the accumulationof osmotic substances.Among them，the treatment with 20 mg/L GSSG solution for 24h is identified as the most effective.

Key Words： sugar beet；oxidized glutathione；seed priming；germination；sedling physiology

甜菜（BetavulgarisL.）是全球仅次于甘蔗的重要糖料作物。（剩余10745字）