76个紫薇新品种表型性状遗传多样性分析

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中图分类号：S722.3 文献标志码：A 文章编号：1673-923X（2025）08-0053-12

Abstract：【bjective】Toinvestigatethegeneticdiversityofphenotypictraitsinnewvrietiesofagerstroemiaindicawithaview to providingatheoreticalbasisforLagerstroemiaindcabreeding，arentalselectioandefientonseationfgerplasoue.

【Method】eventsixntiofLgerstromiinicretaknaseachects，quantitatiersa7aiaive traitswereedoigatideaiodesitalisealsipalmotas clusteranalysiswereadoptedtostudythediversityofnewvarietiesofLagerstroemiaindca.【Result】Thecoffcientofvariation anddiversityindexforquantitativetraitsranged from 12.40% to 48.82% and877to2.145，respectively.TheShannon-Wienerindices amongquaitativetraitsangingfromOO69to.940inwhichtedversityindicesoffowercolour，leafcolouandpetallawolour werlarger，showingrichgeneticdiversity.Thecorrelationresultsshowtatthefloraltraitsareighlysignificantlycoelatewith theleaftraitsandthqualityoftheforalpartscouldbeimprovedbyimprovingteleafstatusinproductionTheresultsofpcipal componetanalsissowtatteeigenvalusoftefistOprcipacomponentsarealleaterthanl，withacumulativecotbution rateof 85.144% ，andthatfowerbudlengthfowerbudithflorescencelengthnforescencewidthowerolourndpetalclaw colourarethemaininfuencesonthphenotpicdiferencesoftenewLagerstroemiaindicavarieties.TeR-typeclusteringclasifyte 28traitsto2cassesinhichmostofteqantitativetraitsareusterinthessIandtecoelationamongthetraitsisstoge whichiscoincdentwithteoelatoesu-tyecusteigdidete28traitsintotoassinchmostoftuatiatie traitsareclusterinlassI，andtecorrelationbeteenthettsasstrongwhichmatchtecorelationesults.Q-tyecustering clssifythetestLagersroemiaindicitofourlasssinichassIouldbusedfoselectingadbdingLagerstroedica varietieswihledoledakioletpalsmoeatedeeoeoulddsal materialtobreedLagerstroemiaindicavarietieswithviolet-redpetalsandpetiteflowrs，classIcouldbeusedforselectingand breedingvarietieswithmedium-foweringtypeandarboriformshape，andclassIVcouldbeusedforselectingandbredingvarieties withbigfowersandarboriformshape.Meanwhile，‘PurpleJade’，CangCui’and‘XiaoxiangHuaxin’aremorediferentfrommost ofthetestvarietiesofLagerstroemiaindica，whichcanbeusedasimportantparentalmaterialsforbreding【Conclusion】he28 phenotypitraitsoftearietiesofagerstroemiainicasodichgeneticaratioandighegreeofvesitychroide reference fortheeffcientuseofLagerstroemia indica resourcesandtheselectionand breedingofnew varieties.

Keywords：Lagerstroemia indica，newvarieties;phenotypictraits;geneticdiversit.

紫薇Lagerstroemiaindica为千屈菜科Lythraceae紫薇属Lagerstroemia植物，具有耐早、适应性强等特点。（剩余14636字）