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1、東北農(nóng)業(yè)大學(xué)碩士學(xué)位論文玉米部分品質(zhì)指標(biāo)遺傳變異的研究姓名：潘相文申請學(xué)位級別：碩士專業(yè)：作物遺傳育種指導(dǎo)教師：金益2001.5.1碩士論文玉米部分品質(zhì)指標(biāo)遺傳變異的研究東北農(nóng)業(yè)大學(xué)TheStudyonGeneticVariationofPartialQualityIndicesinMaize入.XiangWenAbstractGeneticvariabilitygeneticefectandgeneticcorrelationof12

2、qualityindicesandheritabilitygeneticadvanceof10oftheminaimprovedmaizepopulationNEAU2werestudiedbythemeansofTripleTestCrossdesign.Theobjectiveofthisstudywastodeterminetheextentofvariabilitygeneticmodelandcorrelativityofth

3、esequalityindicesandtoinformthegeneticpotentialityofthispopulationinorderthatthequalitytraitsofthispopulationwouldbeutilizedandimprovedmoreefectivelyandtheresultwouldsupplytheoreticbasisandgistforimprovingqualitytraitsan

4、dbreedinghighqualitymaizehybridTheanalysisofTripleTestCrossdesignsuggestedthatbothadditiveanddominanceeffectplayedamagisterialroleinallofindices.andepistasisefectwasnotsignificantatalloftheseindices.whichcoulddrawaconclu

5、sionthatallindicesheredityconformedtoadditive&dominancegeneticmodel.Theestimatesofgeneticconstitutionsshowedthatadditiveefectwasrelativelybigamongvolumeweighttheweightratioofembryoandendospermandalbuminbasedmainlyongener

6、alcompatibleabilitywhenselectingthem.Dominanceefectwasrelativelybigamongglobulinandgrossstarchbasedmainlyonspecialcompatibleabilitywhenselectingthem.Additiveefectanddominanceefectplayedalmostthesameimportantroleamongtheo

7、therindicesbasedongeneralcompatibleabilityandspecialcompatibleabilityatonetimewhenselectingthem.Byestimatingresultsofthedegreeofdominanceitwaslearnedthatthedegreeofdominanceofallindiceswerebiggerthan1whichinformedthatthe

8、expressionofheterosisoftheseindiceswerebelongtosuperdominancegeneactionthereforesomebreedingmaterialswithindiceshigherthanthoseoforiginalpopulationmightbeselectedoutfromthispopulation.Theanalysisofgeneticvarianceshowedth

9、atthemeasureofdispersionandheritabilityoftheseindiceswererelativelybigandimpliedthattherewereextensivelyenoughmeasureofdispersionandratherhighheritabilityabouttheseindicesinthispopulationanditwouldresultinrelativelyhighg

10、eneticadvancement.Atthesametimeitalsoaccountedthatimprovementofthesequalityindicesinthispopulationwasfeasible.Theresultsofcorrelationanalysisshowedthattherewerepervasivegeneticcorrelatedsignificantcorrelationstomoderates

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