小麥谷蛋白、淀粉膨脹特性等品質(zhì)性狀的遺傳分析和QTL定位.pdf

1、Y773597分類號密級’專踴差專夭普。博士學(xué)位論文單位代碼：10019學(xué)號：B02037小麥谷蛋白、淀粉膨脹特性等品質(zhì)性狀的遺傳分析和0TL定位GeneticsanalysisandQTLmappingofgluteninandstarchswellingpropertiesincommonwheat指導(dǎo)合作指導(dǎo)教師名二00五年六月業(yè)究在專研所ABSTRACTApopulationof175recombinantinbredlines

2、(RIL)derivedfromcommonwheatJing771andPm97034wasplantedinBeUingandXinjianglocationn地mainobjectivesweretoinvestigatetheseparationanddistributionofwheatqualitytraitsinRILpopulation，expoundtheinteractioneffectsofgeneticanden

3、vironmentonqualitytraits，revealthedynamicchangesofGMPcontenLandmapseveralqualitytraitsQTLlocionthewheatchromosomesMajorresultsaredescribedbelow：1TherewasacomplexcorrelationshipamongwheatqualitytraitsItWassignificantposit

4、ivecorrelationamongswellingindexofglutenin(SIG)value，Zelenysedimentationvalue(ZelenySV)，GMPcontenLswellingpowe(SP)andglutenindex(G1)NocorrelationWaSfoundbetweenSIGvalueanddryglutenincontent(DGC)，andbetweenSIGandwetgluten

5、incontent(WGC)While，asignificantnegativecorrelationWasfoundbetweenSIGvalueandalkalinewaterretentivenesscapaeity(AWRC)AWRCwassignificantpositivecorrelationwithWGCandDGCFlourwhitenessWaspositivecorrelationwithSIGvalue，Zele

6、nySVDGC，WGCandGIsignificantlyButnegativecorrelationWimAWRC，andnocorrelationwithGMPcontentandSP2ThedynamicchangesofGMPcontentindicatedthatGMPaccumulatedatlowlevelinearlystageofgrainfilling，thenascendedgraduallybutdescende

7、dabout22daysafterfertilization，thenascendedcontinuallyuptomaturityTheresultsofconditionalgeneticvariancecomponentsshowedthatthedynamicchangesoftheGMPnetgeneticeffectswemsimilartoG～口contentaccumulation3TheeffectsofHMWsubu

8、nitscombinationsofdifferentalleliclOCianddifferentsubunitsatthesamelocionqualitytraitswereanalyzedquantitativelyinBeijingandXinjianglocationTheresultsshowedthat(1，1718，510)，(1，1415，510)werethebestHMWsubunitscombinationsf

9、orimprovingtheZeleny—SVSIGvalueandGMPcontent(N，1415，510)wesbetterforimprovingtheAWRCandSPthanothersubunitscombinationsTheinfluenceofsubunitscombinationsonimprovingtheflourwhitenessanddecliningtheflouryellownesswerediffer

10、entindifferentlocationForexample，(1，1718，212)hasapositiveeffectinBeUingbut(N，1718，510)WasbestinXinjinagTheeffectsofHMWsubunitsencodedbythesamealleliclocusonqualitytraitswemalsodifferent1718subunitcombinationwasthefirstin

11、comprehensiverankontheeffectsofwheatqualitytraitsmeasuredthen1415subunitcombinationandthen510subunitcombinationWasrankedthethirdItsmoreimportantofGluB1lociforwheatqualityimproving4129SSRmarkersweremappedon21chromosomesby

12、Mapmaker3，0LengthoflinkagemapWaS21062cM，witharlaveragedistanceofmarkerswas1632cM5OTLanalysisbycombinedcomparisonandepistatictestindifferentenvironmentsshowed：51AdditiveeffectsWasmaingeneticbehaviorformostqualitytraits，an