模拟苏打碱处理对不同品种大豆抗逆性比较研究

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中图分类号：S565.1 文献标志码：A 文章编号：2096-9902（2026）02-0025-06

Abstract：Soilsalinizationisbecoming increasinglyserious.Ithasseriouslyaffectedfoodproductionandsecurityinmany aspects.Itisurgenttoimprovesoilsalinization.Soybeansedlingsaftergrowingfor2weksweretakentosimulateasodasoil environment.Aftertheseedlingsofwildsoybean，No.9316，No.97andBainong6weretreatedwithequalmolarNa2CO3and NaHCO3alkalisolutionsfor72hours，theleavesandrotsofthefoursoybeansweretakentodetect prolineinthematerials Fourphysiologicalindicators：Proline（PRO）content，malondialdehyde（DA）content，catalase（CAT）activityandtotalatioxidant capacity.Aferstatisticalanalysis，theresultsshowedthatthereweresignificantdiferencesinsalttoleranceamongiferent soybeanvarietiesanddiferentparts.The MDAcontentandPROcontentinleavesincreasedwiththeincreaseofstresssolution concentration;exceptforCATenzymeatvityinNo.9316，theMDAoftheotherthreesoybeansdecreasedwiththeincreaseof stresssolutionconcentrtion；thetotalantioxidantenzymecapacityof ZhongyeSoybeanandNo.9316decreasedfirstandthen increasedwiththeincreaseofstresssolutionconcentration，whileNo.97andBainong6increasedwiththeincreaseofstre solutionconcentration.CATandPROcontentsinrotsincreasedwiththeincreaseofstresssolutionconcentration，whileMDA andtotalantioxidantcapacitydecreasedwiththeincreaseofstressolutionconcentration.Throughtheaboveanalysis，amogthe foursoybean varieties，9316hashigherMDAandPROcontent，stronger CATactvity，andstrongertotalantioxidantcapacity. Compared with theotherthreesoybeanvarieties，itssalttoleranceisstronger，anditsstressresistanceefect isthebest.

Keywords： soybean; alkali stress; physiological response; stress resistance; variety selection

土壤盐碱化是制约全球农业发展的主要非生物胁迫之一。（剩余8466字）