1、河北農(nóng)業(yè)大學(xué)碩士學(xué)位論文玉米DH群體的遺傳分析及QTL定位初探姓名:宋煒申請(qǐng)學(xué)位級(jí)別:碩士專業(yè):作物遺傳育種學(xué)指導(dǎo)教師:劉志增20050601GeneticAnalysisofMaizeDoubledHaploidPopulationandPrimaryStudyonQTLsMajorCropGeneticsandBreedingPostgraduateSongWeiTutorLiuZhizengAbstractWithtwomaize
2、haploidpopulationsandoneDHpopulation,15agronomictraitsofDHpopulationwereanalyzedhereditarySegregationofthreepopulationsweredetectedbySSRGeneticmapofDHpopulationwasconstructedQTLswereidentifiedforsometraitsofDHpopulationT
3、heresultsweresummarizedasfollows:1WithmaizeDHpopulationderivedfrom“NongDanNo5”(Nongxi531Nongxi110)inducedbyparthenogeneticinducing—line,theheritabilityanalysisof15quantitationtraits,ieearlength,earperimeterearweJ“ght,cob
4、perimetercobweie#t,100lemelweight,rOWNo,kernel/rowrareearlength,planthei曲t,stemperimeterLUBLUN,numberoflateralbranch,daysfromsowingtoblooming,weremadeThenumberofgenepairscontrollingthesetraitswasestimatedBasedonkourtosis
5、andskewnessvaluesofDHpopulation,thegeneinteractioninthesetraitswasdiscussedTheresultsshowedthat,complementaryinteractionwasdetectedforrareearlength,daysfromsowingtoblooming,rowNoandcobwei曲tWhilethegenieinteractionwasfoun
6、dabsentforothertraitsItwassuggestedthat,earlength,earperimeter100lemelweJ【glltandplantheightareselectedinearlygenerationsbecauseofhi曲heritabilityfewgenepairsandabsenceofgeneinteraction2SSRmakersweredetected,withtwomaizeh
7、aploidpopulations‘DenghaiNo9”(872365232)and(Nongxi531K36),andDHpopulation(con—taining72lines)derivedfrom“NongDanNo5”(Nongxi531Nongxi110)inducedbyparthenogeneticinducing1ineTheresultsshowedthat,therewasnosegregationdistor
8、tionamong30markersof“DengllaiNo9”and24markersof(Nongxi531K36)While3linkedmarkers,locatingthesecondchromosome,showedthesegregationdistortion(P005)andderivedtowardfemaleparent(Nongxi531)among39markersofDHpopulation372lines
9、ofDHpopulationderivedfrom“NongDanNo5”(Nongxi531Nongxi110)wereevaluatedforearlength,earperimeterearweight,cobperimetercobwei曲t,100,lernelweie#t,rowNo,kernel/rowrareearlength,planthei曲t,stemperimeteruJP,LUN,numberoflateral