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《药用植物牛大力组织培养初探.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、广西农业科学2010,41(6):523—525Gu刚gxiAgriculturalSciences·523·药用植物牛大力组织培养初探潘颖南,张向军,蒙平,庾韦花,陈少珍,唐军,黄素梅,邹瑜(广西农业科学院生物技术研究所,南宁530007)摘要:以牛大力幼嫩茎段为外植体,采用0.1%HgCl2不同处理时间对外植体进行灭菌;以Ms为基本培养基,探讨不同浓度6一BA(2.0、2.5rag/L)和NAA(0.2、1.0rag/L)对无菌外植体愈伤组织和芽的诱导效果;以I/2MS为生根培养基,分别附加不同浓度NAA(0—2.5ms/L)和IBA(0
2、—2.5mg/L),探讨对生根培养的效果。结果表明,0.1%Hgcl摊理15rain,外植体褐化率和污染率较低;Ms培养基中添加不同浓度6--BAfalNAA组合均能诱导牛大力茎段产生愈伤组织,但以添加1.0mg/LNAA的愈伤组织诱导率最高;添加NAA和6-BA可诱导牛大力茎段上的腋芽萌动再生,但最高出芽率仅78.6%;再生芽的适宜增殖培养基为MS+2.0mg/L6-BA+0.05ms/LNAA,培养30d,增殖倍数可达4~5倍;在培养基1/2MS+NAA2.5mg/L+IBA2.5mdL中培养,其生根率可达66.7%;经过炼苗,移栽到菜园
3、土和河沙(3:1)的混合基质中,30d后试管苗的移栽成活率可达85%以上。关键词:牛大力;茎段;愈伤组织;诱导;生根中图分类号:Q943.1文献标识码:A文章编号:1002—8161(2010)06-0523-03TissuecultureofmedicinalplantMillettiaspeciosaChamp.PANYing-nan,ZHANGXiang-jun,MENGPing,YUWei-hua,CHENShao-zhen,TANGJun,HUANGSu—mei,ZOUYu(BiotechnologyResearchInstitut
4、e,GuangxiAcademyofAgriculturalSciences,Nanning530007,China)Abstract:%eyoungstemsofMillettiaspeciosaChamp.wereusedasexplants.Afterstefilizationwith0.1%HgCl2for12,15and18rain,thecallusandbudsofexplantswereinducedinMSmediumaddedwithdifferentconcentrationsof6-BA(2.0,2.5mg/L)and
5、NAA(0.2,1.0ms/L).,11le1,2MSmediumaddedwitllNAA(o-2.5mg/L)andIBA(0-2.5ms/L)wasusedtoconductrootcultureininducedplanflets.Theresultsshowedt}latthebrowningandinfectionrateofexplantswerelowerwhensterilizedfor15rainby0.1%HgClz.Thecallusofexplantscouldbeinducedinmediumaddedwithdi
6、tterentcombinationsof6-BAandNAA.buttheinductionrateofcalluswasthehighestinmediumaddedwith1.0mdLNAA.Theaxillarybudsinstemcouldbegerminatedinmediaaddedwith2.0and2.5reaL6一BA.butthehighestgerminationrateonlyreached78.6%.7Ihebestmediumformultiplicafionofregenerateda,,illarybudsw
7、asMS+2.0m#L6-BA+O.05mg/LNAA.themultiplicationcoefficientwas4.0—5.0afterculturedfor30days.ItwasfoundthattherootingrateofmultiphedbudswasuDto66.7%inmedium1/2MS+NAA2.5mg/L+IBA2.5mga_.andthesurvivalrateoftransplantsreached85%on30daysaftertransplantedtomixedmatrixofvegatablesoil
8、andfiversand(3:1).Keywords:肘刎et幽speciosaChamp.:stem;callus;induction;rooting牛大力又叫山
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