資源描述:
《甜菜分子標(biāo)記遺傳圖譜的初步構(gòu)建》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、中文摘要本研究選用JV34.2和28023為作圖親本,以F2分離群體中的200株單株為作圖群體,利用SRAP和SSR分子標(biāo)記技術(shù)初步構(gòu)建甜菜分子遺傳圖譜,為甜菜QTL定位、標(biāo)記輔助選擇育種等奠定基礎(chǔ)。研究結(jié)果如下:(1)以JV34.2和28023的DNA為模板對(duì)561對(duì)SRAP引物組合和114對(duì)SSR引物進(jìn)行篩選,選出多態(tài)性較好的56對(duì)SRAP引物組合和19對(duì)SSR引物。(2)利用篩選出的56對(duì)SRAP引物組合以及19對(duì)SSR引物,對(duì)作圖群體進(jìn)行多態(tài)性分析,共獲得145個(gè)多態(tài)性標(biāo)記,其中SRAP標(biāo)記126個(gè),
2、SSR標(biāo)記19個(gè)。(3)對(duì)得到的多態(tài)性標(biāo)記進(jìn)行卡方檢驗(yàn),SRAP標(biāo)記中有28個(gè)標(biāo)記發(fā)生偏分離,偏分離率為22.22%;SSR標(biāo)記中有3個(gè)出現(xiàn)偏分離現(xiàn)象,偏分離率為15.79%。(4)利用mapmaker3.0和icimappin93.1軟件對(duì)得到的多態(tài)性標(biāo)記進(jìn)行連鎖分析,構(gòu)建了一張包括10個(gè)連鎖群,i12個(gè)標(biāo)記位點(diǎn)的分子連鎖圖譜,其中包含97個(gè)SRAP標(biāo)記和15個(gè)SSR標(biāo)記,標(biāo)記問(wèn)平均間距10.17cM。連鎖群長(zhǎng)度在49.86—232。69cM之間,圖譜覆蓋基因組總長(zhǎng)度為1l39.89cM。關(guān)鍵詞:甜菜;SR
3、AP;SSR;遺傳圖譜黑龍江大學(xué)碩士學(xué)位論文Abstracthlthis吣ageneticmapofsugarbeetwasconstructed-withSRAPmarkersandSSRmarkersusingamappopulationconsistingof112F2individualsderivedfromthecrossofJV34-2and28023.Thegeneticmapprovidesanimportantbaseofinformationinquantitivetraitloci(Q
4、TL)ofsugarbeetandmarker-assistedselectionbreeding.Theresultsareasfollowing:(1)56SRAPprimerpairsand19SSRprimers,whichcouldshowhighpolymorphisrnbetweenJV34-2and28023,werescreenedoutfrom561SRAPprimerpairsand14SSRprimers.(2)56SRAPprimerpairsand19SSRprimersgener
5、ated145polymorphicbandsinthemappopulationanalysis.Thesepolymorphicbandscontain126SRAPmarkersand19SSRmarkers.(3)Chi·squaretestWasusedtoanalyzethesepolymarphicbands.Theresultindicated28SRAPmarkersand3SSRmarkersexhibiteddistortedsegregation.Theratioofdistorted
6、segregationare22.22%and15.79%.(4)Accountingbymapmaker3.0andicimappin93.1,ageneticlinkagemapWaSconstructed,whichdistributedintenlinkagegroupsandconsistedof112geneticmakers,containing97SRAPmarkersand15SSRmakers,withanaveragedistanceof1O.17cMbetweenmarkers.The
7、lengthoflinkagegroupisbetween49.86eMand232.69cMandthetotallengthofmapis139.89cM.KeyWOrds:Sugarbeet;SRAP;SSR;Geneticlinkagemap-II.目錄中文摘要????????????????????????????..IAbstract??????????????????????????????????????????????.II目錄??????????????????.???????????.Ⅱ
8、I英文縮略表????????????????????????????.V第1章緒論???????????????????????????..11.1甜菜生物學(xué)特性????????????????????????l1.2遺傳標(biāo)記???????????????????????????.11.2.1形態(tài)標(biāo)記????????????????????????。l1.2.2細(xì)胞學(xué)標(biāo)記??????????????