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ID:31955512
大小:7.05 MB
页数:53页
时间:2019-01-29
《分子标记辅助选择转育油菜高油酸隐性核不育系》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、万方数据兰!奎些奎堂垫!!星堡主型壅竺堂堡!兰些!笙奎从每个回交组合中筛选出了背景回复率较高的6株单株,背景回复率最高的单株背景恢复到轮回亲本的90.3%。5.利用目标基因BnE4D2和Msl的侧翼标记对三个回交组合(甲ZL593A×甲9800、甲ZL353A×1l品6、甲ZLl00A×甲9818)BC3F1和BC2F2群体中的前景入选单株进行重组交换单株的筛选。经过筛选在回交组合甲ZL593A×甲9800中得到5株在BnFAD2附近发生单交换的单株,1株在BnFAD2附近发生双交换的单株,4株在Msl附近发生单交换的单株,其中单株DL056。1和DL06
2、1.6在两个目标基因附近都发生了单交换;在回交组合甲ZL353A×1l品6中筛选到13株在BnFAD2附近发生单交换的单株,3株在Msl附近发生单交换的单株;在回交组合甲ZLl00A×甲9818中筛选到2株在BnFAD2附近发生单交换的单株,2株在BnFAD2附近发生双交换的单株,1株在Msl附近发生单交换的单株,其中单株DLl18.8在BnFAD2附近发生双交换,同时在Msl附近发生单交换。关键词:甘蓝型油菜:隐I生核不育;油酸;分子标记辅助选择;侧翼标记选择万方数据分子标记辅助选择转育油菜高油酸隐性核不育系ABSTRACTRapeseedistheth
3、irdmajorsourceofplantoilintheworld,aswellaSthemainsourceofdomesticplantoilinourcountry.Improvingthecontemofdifferentfattyacidintherapeseedoilcanincreaseitsediblevalueandcompetitiveness嬲akindofnewenergysourceorindustrialresource.Increasingtheproportionoftheoleicacidinthefattyacidis
4、oneofthemo戏importantgoalforimprovementofthefattyacidinrapeseed.Thepurposesofthisresearcharetobreedtherecessivegeniemalesterilelineswithhigholeicacidthroughmarker-assistedselection,whichCallprovidebreedingmaterialsfortheproductionofhybridseedwithhigholeieacid,anddevelopefficientmet
5、hodsformarker-assistedselection.Themainresultsareasfollows:1.Sterile(AAmslmsl),maintainer(AAMslmsl)andrestorer(AAMslMsl)plantswithlligholeicacidhavebeenselectedfromtheBC2F2populationofthreebackcrossingcombinations(JiaZL593AxJia9800,JiaZL353A×1lpin6,JiaZLl00AxJia9829),andheterozygo
6、usindividuals(AaMslmsl)havealsobeenselectedfromtheBC3F1populationofthesamebackcrossingcombinations.Meanwhile,theindividualswhichareheterozygous(AaMslmsl)havebeenselectedfromtheBC1F1populationoftwobackcrossingcombinations(JiaZL360A×1lpin9,JiaZL353AxJia9829).2.Basedonpreviousstudies
7、,specificprimersforsterileallelemslhavebeendesignedagain,whichhavesubsequentlybeentestedindoublePCR.PrimerpaisofMs1—2F一1andMsl一2R一6togetherwiththeprimersforMslindoublePCRperformedthebest,whichcarldistinguishrecessivehomozygous,dominanthomozygousandheterozygousgenotypeinonereaction
8、.Thetestedprimerswereusedtoidenti
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