甘蓝型油菜显性核不育纯合两用系的应用分析

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1、西南大学琢土论文ABSTRACTResearchonApplicationofDominantGenicMaleSterileHomo巧gomTwo-TypeLinesinBrassicanapusLMajor：CropsGeneticsandBreedingMasterdegreecandidate：ZhangJianSupervisor：TangZhanglin，researchfellowThedominantgenicnlalesterilityinBrassicanapusLplays柚importantvalueinbeteros缸applicationandrecu

2、rrentselectionofpopulation,forithasmanyadvantages,suchascompletelyandstablesterility,notra∞pollen,fentUtyisn’taffectedbytemperatureandenvironment,∞badcytoplasmiceffects,backcrossbreedingiseasyandsoon．In1985LietaLfirstcrestedthegenetictheoryofdoubledominantgeneepistasisinteractionoⅢatroLThepro

3、ductionofseedsrequiresremovalof50％fertileplantsingenicmalesterility,andLieta1．successfullyresolvedtheproblem,thusbroadenthescopeofdominantgeulcmale咖liI蚵application．Inthestudy,First—edicIcdtheallelismofdominantgeulcmalesteriletwo-typelinesfertilitygenesfromdifferentsourcesaccordingtothegenetic

4、regularityanalysisoffourdominantgenicmalesteriletwo-typelinesfermjtygenesinBrassica删lp螂L；Andthenmadeanincompletediallel鲫sbywinsfoursterilelinesandseven_estorablelines，analyzedthedataofmainagronomicandqualitycharactersofparentsandcombinations，estimatedthecombiningabilityofparents,analyzedthehe

5、temsisofcombinations．ThemainresultsWel-easfollows：LAlielBmanulysisoffertilitygenesfromdifferentoDnn嘲Inthisresesrch,vurisnceanalysiswascarriedoutfortheallelismoffertilitygenesrelatedtofourmaterialsofdominantgeulcmalesteriletwo-typelinesinBrasaicanapusLfromdifferentsour嘲byusingclassicalgenetics

6、methodincludingGdlAB，GSAB，D3ABandG588AB．Theexperimentresultsrevealed：thefourkindsofdominanthomozygoustwo-typelinesbelongedtothesamtypeinfertilityheredity,thesterilerestorergeneofthefourmaterialswasthenon-allelicgenecomparedwiththerestorergeneofPolimacytoplasmicnude-sterility,theywereclassifie

7、dtodifferentfertilityreStOl℃rsystemrespectively．2．Combiningnbil-衄analysisofagronomiccharactersThegeneralcombiningabnity(C-CA)ofagronomiccharactersinfoursterilelineswasIv西南大学硕士论文ABSTRACTsyntheticallyevaluated,GSABobtainedthehighestscores，follo