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1、棉花學(xué)報(bào)CottonScience2015袁27淵6冤院524―533棉花遠(yuǎn)緣雜交創(chuàng)制抗黃萎病新種質(zhì)1,22221*1*肖松華袁劉劍光袁趙君袁吳巧娟袁俞敬忠袁喻德躍淵1.南京農(nóng)業(yè)大學(xué)/作物遺傳改良與種質(zhì)創(chuàng)新國家重點(diǎn)實(shí)驗(yàn)室袁南京210095曰2.江蘇省農(nóng)業(yè)科學(xué)院經(jīng)濟(jì)作物研究所袁南京210014冤摘要院本研究通過陸地棉與異常棉堯辣根棉堯旱地棉堯雷蒙德氏棉堯黃褐棉等野生棉的遠(yuǎn)緣雜交和回交等袁育成65份陸地棉背景的遠(yuǎn)緣種質(zhì)系遙農(nóng)藝性狀鑒定結(jié)果袁這些種質(zhì)系的株高平均值與陸地棉品種處于相同水平袁單株果枝數(shù)堯單株果節(jié)數(shù)堯單株結(jié)鈴數(shù)堯鈴重堯衣分平均值均低于陸地棉品種袁纖
2、維長度堯斷裂比強(qiáng)度均高于陸地棉品種袁馬克隆值均低于陸地棉品種遙落葉型黃萎病菌系V991人工病圃抗性鑒定結(jié)果袁從65份陸地棉背景的遠(yuǎn)緣種質(zhì)系中獲得5份抗黃萎病的棉花新種質(zhì)系袁其中蘇遠(yuǎn)040堯蘇遠(yuǎn)045堯蘇遠(yuǎn)061病情指數(shù)分別為8.33堯4.35堯7.79袁高抗黃萎病曰蘇遠(yuǎn)030堯蘇遠(yuǎn)034病情指數(shù)分別為12.35堯13.70袁抗黃萎病遙追蹤陸地棉抗黃萎病新種質(zhì)系的親緣關(guān)系發(fā)現(xiàn)袁蘇遠(yuǎn)040和蘇遠(yuǎn)045為陸地棉與雷蒙德氏棉雜交后代袁蘇遠(yuǎn)061為陸地棉與黃褐棉雜交后代袁蘇遠(yuǎn)030和蘇遠(yuǎn)034為陸地棉與旱地棉雜交后代遙這些優(yōu)質(zhì)堯抗黃萎病新種質(zhì)的育成袁拓寬了陸地棉的
3、遺傳基礎(chǔ)袁為我國棉花抗病新品種選育提供種質(zhì)材料遙關(guān)鍵詞院棉花曰遠(yuǎn)緣雜交曰抗黃萎病曰新種質(zhì)曰創(chuàng)造中圖分類號院S562.035.1文獻(xiàn)標(biāo)志碼院A文章編號院1002-7807淵2015冤06-0524-1010.11963/issn.1002-7807.2015060041,22221*1*XiaoSonghua,LiuJianguang,ZhaoJun,WuQiaojuan,YuJingzhong,YuDeyue(1.210095,;2.210014,)Tocreatenewgermplasmlinesresistanttowiltinuplandcotto
4、n,65distanthybridizationgermplasmlines(DHGLs)inuplandcottongeneticbackgroundwerecultivatedbyinterspecifichybridizationbetweenandwildspeciesincluding,,,,,interspecificF1backcrossingwithforfourgenerations,andselfingforfourgenerations,followedbyaconventionalbreedingprogram.Theresult
5、sofagronomictraitidentificationduring2011-2012indicatedthataverageplantheightsofDHGLswerecloselysimilartocom-mercialcultivarsofuplandcotton,whileaveragefruitbranches,fruitnodes,bollsofDHGLsindividualplantwerelowerthanthoseincommercialcultivarsofuplandcotton.Averagesinglebollweigh
6、tandlintpercentageofDHGLswerelowerthancom-mercialcultivarsofuplandcotton.Fiberlength,strength,finenessandmaturityofDHGLswerereasonablycollocated.Fiberofmostlineswassuitableforspinningextrahighcountyarn,butthemainfiberqualityindicesofcommercialcultivarsofuplandcottonwerenotwellcoo
7、rdinated.Identificationofresistancetowiltindefoliationdiseasenurseryduring2012-2013indicatedthatfiveDHGLsresistanttowilt.Suyuan040,Suyuan045andSuyuan061werehighlyresistanttowiltwithadiseaseindexof8.33,4.35and7.79,respectively.Suyuan030andSuyuan034wereresistanttowiltwithadiseasein
8、dexof12.35and13.70,respectively.Thegenet
