[花卉栽培技术]-球根花卉-Morphological_structure_and_water_status_in_bulbs

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1、Morphologicalstructureandwaterstatusinbulbsduringtheirtransitionfromdormancytoactivegrowth:VisualizationbyNMRimagingRinaKamenetskyHanitaZemahAnnettevanderToornHaimD.RabinowitchHenkvanAsPeterBendelacceptedbyJ.exp.Bot.Tulipbulbs(TulipagesnerianaL.)WorldwideuseoftulipasornamentalplantNee

2、dsacoldperiodduringdormancytofacilitatenormaldevelopmentandfloweringFundamentalknowledgeaboutbulbdormancyandgrowthislimitedPurposeoftheproject:Todetermineifsignificantdifferencesinwaterstatusbetweenbulbsstoredat4oCandat20oCcanbeobservedusingMRI.Mainlyusing:Visiblemorphologicalchangesin

3、theimagesProtondensitydeterminationR2measurements(1/T2)ADCmeasurements(reflectingprotonmobility)R1measurements(1/T1)scalesbudbasalplate1cmMorphologicalMRimageoftulipbulbResolution350x350x700mm0.0330.0250.0332.5302.5e-9000000SingleparameterimagesofthetulipbulbAmpofR1AmpofR2AmpofADCR1ima

4、geR2imageADCimage7030020oC4oC4oC20oCamplitudeR2start2weeks4weeks8weeks12weeksTime-dependentchangeinamplitudefortwobulbsTime-dependentchangeinR2fortwobulbsPlantedbulbs(10daysafterplanting)4oC20oCConclusionsMRparameterssuchasR2andADCcanbeusedtoobservedifferencesbetweenchilledandnon-chill

5、edbulbsMRIneedstobecombinedwithhistologytounderstandtheobservedchangesinwaterstatusThemajorityofchangesinwaterstatustakeplacebetween2and8weeksafterstorage