利用固体核径迹探测器研究豌豆和苜蓿植株中硼的分布

利用固体核径迹探测器研究豌豆和苜蓿植株中硼的分布Introduction:Boron plays an essential role in the growth and development of

利用固体核径迹探测器研究豌豆和苜蓿植株中硼的分 布 Introduction: Boronplaysanessentialroleinthegrowthanddevelopment ofplants.Itisanessentialnutrientthatisrequiredinsmall amountsandaffectsvariousphysiologicalprocesses.Duetoits limitedavailabilityinsoil,borondeficiencyisacommonproblem affectingcropsworldwide,leadingtoreducedgrowth,yield,and qualityoftheproduce.Therefore,tounderstandthedistribution ofboroninplants,itisessentialtostudytheborondistributionin differentplantspecies.Inthisstudy,weusedsolid-statenuclear trackdetectors(SSNTDs)toinvestigatetheborondistributionin peaandalfalfaplants. Methods: Plantsamplesofpeaandalfalfawerecollectedfromthe experimentalfieldoftheCollegeofAgriculture,Universityof ScienceandTechnology,namedasFarmA,locatedinthesuburbs ofthecity.Theplantsweregrowninnutrient-richsoilandwere harvestedafterreachingmaturity.Theplantsamplesweredriedat roomtemperatureandthencrushedintoafinepowder.The powderwasthensealedinapolyethyleneterephthalate(PET) container. TheSSNTDsusedinthestudywereLR-115typeIIdetectors obtainedfromtheHarwellResearchLaboratories.Theywere calibratedtomeasuretherangeofalphaparticles.Thedetectors werethenexposedtothepowderedplantsamplesforaperiodof onemonth.Aftertheexposureperiod,thedetectorswere removedfromthecontainers,etchedina2.5NNaOHsolutionfor 2hours,washedanddried.Thenumberoftracksformedwas countedusingamicroscopewithamagnificationof400x. Results: Themeannumberoftrackspercm²wasdeterminedforboth peaandalfalfa.Theboronconcentrationwasthencalculated usingacalibrationcurvethathadbeenpreviouslyestablished.The resultsshowedthattheboronconcentrationwashigherinthe rootsofpeaplantsthaninthestemsandleaves.Thehighest