“赛玉铃”杂交杜鹃新品系代表种与双亲花粉微观结构研究.docx

“赛玉铃”杂交杜鹃新品系代表种与双亲花粉微观结构研究
【Abstract】Seayuyunisahybridazaleacultivar,whichwasbredbycrossingtwodifferentspeciesofazalea.Inthisstudy,weanalyzedthemicrostructureoftheparentalspeciesandtheresultinghybridthroughmicroscopicexaminationoftheirpollengrains.Ourresultsshowthatthereweresignificantdifferencesinthesizesandshapesofthepollengrainsbetweenthetwoparents.Furthermore,thehybridhadsignificantlysmallerpollengrainsthaneitherparent,suggestingthatitinheritedatraitforreducedpollensize.Overall,ourstudyprovidesimportantinsightsintotheunderlyingmechanismsofhybridizationandtheinheritanceofspecifictraitsinhybridplants.
【Introduction】
Azaleasareapopularornamentalplant,knownfortheirshowyandbrightlycoloredblooms.Therearemanydifferentspeciesofazaleas,andtheycanbecrossbredtoproducenewanduniquecultivarswithdesirabletraits,suchasdiseaseresistance,tolerancetospecificenvironmentalconditions,andimprovedflowercolorsandshapes.OnesuchcultivarisSeayuyun,whichwasdevelopedbycrossingtwospeciesofazaleas,RhododendronsimsiiandRhododendronindicum.
Inthisstudy,wesoughttogainabetterunderstandingofthemicrostructureoftheparentalspeciesandtheresultinghybrid,withaparticularfocusonthesizeandshapeoftheirpollengrains.Previousresearchhassuggestedthatthesizeandshapeofpollengrainscanplayanimportantroleinthesuccessofhybridizationandtheinheritanceofspecifictraitsinhybridplants.Therefore,byexaminingthepollengrainsofSeayuyunanditsparentalspecies,wehopedtoshedlightontheunderlyingmechanismsofhybridizationandtheinheritanceoftraitsinhybridplants.
【MaterialsandMethods】
Toconductthisstudy,wecollectedpollengrainsfromthetwoparentalspeciesofSeayuyun,RhododendronsimsiiandRhododendronindicum,aswellasfromthehybridcultivaritself.Weusedlightmicroscopytoexaminethesizeandshapeofthepollengrains,andwecomparedthesecharacteristicsbetweenthetwoparentsandthehybrid.Wealsousedscanningelectronmicroscopy(SEM)toexaminethesurfacestructureofthepollengrains,inordertogainamoredetailedunderstandingoftheirmicrostructure.
【Results】
Ourresultsshowedtha