Development of Novel Cytoplasmic Male Sterile Source from Dongxiang Wild Rice （Oryza rufipogon）-中国Betway体育网页登陆

摘要 Thisstudywasconductedtodevelopandcharacterizeanovelcytoplasmicmalesterile(CMS)sourcewhichwasidentifiedfromDongxiangwildrice(Oryzarufipogon)bycrossingDongxiangwildriceasfemalewithZhongzao35,anindicainbredvariety,asmaleandcontinuousbackcrossingwithZhongzao35.ObservationunderopticalmicroscopemanifestedthatthisnovelCMSbelongedtotypicalabortiontypewithlesspollencomparedwithwildabortivetypecytoplasm(CMS-WA).SequentialplantingshowedthatthisnovelCMShascompleteandstablemalesterility.Testcrossexperimentshowedthatallthe24testedmaterialsincludingmaintainerandrestorerlinesofCMS-WAandHongliantypecytoplasm(CMS-HL)andotherindicainbredvarietiesarethemaintainerswithcompletemaintainingability,suggestingthatthisnovelCMShasfertilityrestorationtotallydifferentfromCMS-WAandCMS-HLandbelongstoanoveltypeofCMS.Sofar,weonlydiscoveredauniquefertilityrestorationsourceforthisnovelCMS.InheritanceanalysisshowedthatthefertilityrestorationofthisCMSwasgovernedbythreepairsofindependentdominantgenes.ProspectforapplicationofthisnovelCMSsysteminhybridricebreedingwasalsodiscussed.

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Development of Novel Cytoplasmic Male Sterile Source from Dongxiang Wild Rice （Oryza rufipogon）

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