甘蓝型油菜显性核不育纯合两用系的应用分析 (1)

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

2、entselectionofpopulation,forithasmanyadvantages,suchascompletelyandstablesterility,notra∞pollen,fentUtyisn’taffectedbytemperatureandenvironment,∞badcytoplasmiceffects,backcrossbreedingiseasyandsoon．In1985LietaLfirstcrestedthegenetictheoryofdoubledominantgeneepistasisinteractionoⅢatroLTheproduct

3、ionofseedsrequiresremovalof50％fertileplantsingenicmalesterility,andLieta1．successfullyresolvedtheproblem,thusbroadenthescopeofdominantgeulcmale咖liI蚵application．Inthestudy,First—edicIcdtheallelismofdominantgeulcmalesteriletwo-typelinesfertilitygenesfromdifferentsourcesaccordingtothegeneticregula

4、rityanalysisoffourdominantgenicmalesteriletwo-typelinesfermjtygenesinBrassica删lp螂L；Andthenmadeanincompletediallel鲫sbywinsfoursterilelinesandseven_estorablelines，analyzedthedataofmainagronomicandqualitycharactersofparentsandcombinations，estimatedthecombiningabilityofparents,analyzedthehetemsisof

5、combinations．ThemainresultsWel-easfollows：LAlielBmanulysisoffertilitygenesfromdifferentoDnn嘲Inthisresesrch,vurisnceanalysiswascarriedoutfortheallelismoffertilitygenesrelatedtofourmaterialsofdominantgeulcmalesteriletwo-typelinesinBrasaicanapusLfromdifferentsour嘲byusingclassicalgeneticsmethodincl

6、udingGdlAB，GSAB，D3ABandG588AB．Theexperimentresultsrevealed：thefourkindsofdominanthomozygoustwo-typelinesbelongedtothesamtypeinfertilityheredity,thesterilerestorergeneofthefourmaterialswasthenon-allelicgenecomparedwiththerestorergeneofPolimacytoplasmicnude-sterility,theywereclassifiedtodifferent

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