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Preliminary Construction of Genetic Map in Tetraploid Alfalfa

四倍体紫花苜蓿遗传图谱的初步构建



全 文 :!23" !6#
 Vol.23  No.6
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ACTA AGRESTIA SINICA
   2015$  11%
  Nov.  2015
犱狅犻:10.11733/j.issn.10070435.2015.06.017
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WANGMengying1,ZHANGTiejun1,LONGRuiCai1,LIUFengqi1,2,
YANGQingchuan1,KANGJunmei1
(1.InstituteofAnimalSciences,ChineseAcademyofAgriculturalSciences,Beijing100193,China;
2.InstituteofGrasslandResearch,HeilongjiangAcademyofAgriculturalSciences,Harbin,HeilongjiangProvince150086,China)
犃犫狊狋狉犪犮狋:Inthisstudy,aF1populationofalfalfawasgeneratedbycrossinganearlymaturing,lowyield
plant(maleparent)andalatematuring,highyieldingplant(femaleparent).AndasystemofPCRampli
ficationfortetraploidalfalfawasestablishedbyanalyzingthestandardPCRreactionprogramortouch
downprogram.Totalof130SSRmarkersweretestedintheexperiments,ofwhich60markersgavepoly
morphicbetweentwoparentsandwereusedtoconstructthegeneticlinkagemap.GenotypesoftheF1
mappingpopulationwereanalyzedbyPAGEelectrophoresis.Andaprelimarygeneticlinkagemapwas
constructedbyusingTetraploidMapsoftware.Thegeneticmapconsistsof44loci,spanning979cMand
coveringalof8alfalfachromosomeswithanaveragegeneticdistanceof22.25cM.Moremarkersarestil
neededtobeaddedtomakeasaturatedgeneticmap.Thestudymadeafoundationforidentifyingimpor
tantquantitativetraitloci(QTL)forimportantagriculturaltraits.
犓犲狔狑狅狉犱狊:犕犲犱犻犮犪犵狅狊犪狋犻狏犪;Geneticmapping;SimpleSequenceRepeat(SSR);Genotyping
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:20150128;GHEF:20150616
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