引进和我国小麦品种的遗传多样性分析

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1、GeneticDiversityAnalysisforWheatVarietiesofHungary,CzechandChinaAbstractWheatgeneticdiversityisimportantforbreedingprogram．Diversityofqualitytraitsincludingsixproteinqualitytraits．eightstarchqualitytraitsaddEST-SSRmarkerwereanalyzedrespectivelyusing80and62wheatvarieties(1ines)ofHungary,Czechan

2、dHuang—HuaiWinterWheatAreaofChinainthisstudy．Theresultsshowedthattherewasabundantdiversityamongdifferentvarieties，whichcouldaffordreferenceinwheatbreeding．1．Diversityindexes(H3were1．74-一2．03for6proteinqualitytraits，andwerethehighest(2．03)forSedimentationvalue，whichhadacoefficientofvariationat3

3、2．32％．Diversityindexesofproteincontent,whichhadacoefficientofvariationat16．10％．andwetglutencontent,whichhadac,oe伍cientofvariationat15．89％．were1．96and2．01．Comparedwiththethreetraitsabove，diversityindexesoffarinogramparameters，whichhadhighercoefficientsofvariations，werecomparativelylower,withara

4、ngeof1．74～1．91．nleresultsofclusteranalysiswithSmofsquaresmethodforproteinqualitytraitsshowedthat80wheatvarietiesCanbedividedintofourgroupswithdifferentcharacteristics．Theftrstcluster,ofwhich34varietiesareallabroad，hadthegreatestproteincontentandsedimentationvalue，secondlydevelopmenttimeandstab

5、ilitytime．reachedthequalitystandardofhighglutenstrength．n圮secondcluster,whichhadthegreatestdevelopmenttimeandstabilitytime，included10varieties，andwerebelongtomakingquality．nletllirdclusterincluded26varieties,ofwhich25arcdomesticolles,hadthegreatestwetglutencontentandwaterabsorptionrate．Thefour

6、thclusterincluded10varieties，andalltraitsofitwerelowerthantheotherthreeones．nlisresultshowedthatproteintraitshaveagooddisplayofregionality．2．For8starchtraits，diversityindexeswere1．13~2．05，andforfallingVInumber,whichhadthegreatestcoefficientofvariationat25．43％，we陀2．05，whichwasalsothegreatest．Di

7、versityindexesofpastingtimewerearound1．79~1．99．whichWaSlOWerthantheothertraits．n地resultsofclusteranalysiswithsumofsquaresmethodforstarchqualitytraitsshowedthat80wheatvarietiesCallbedividedintofourgroupswithdifferentcharacteristics．11抡fi