贵州农业科学
貴州農業科學
귀주농업과학
GUIZHOU AGRICULTURAL SCIENCES
2015年
2期
10-13
,共4页
王志伟%魏利民%薛薇%吴立强%张贵寅
王誌偉%魏利民%薛薇%吳立彊%張貴寅
왕지위%위이민%설미%오립강%장귀인
棉花%遗传图谱%纤维品质%QTLs
棉花%遺傳圖譜%纖維品質%QTLs
면화%유전도보%섬유품질%QTLs
cotton%genetic map%fiber quality%QTLs
为进一步增加特异性分子标记,填补棉花遗传图谱密度空隙,挖掘与纤维品质紧密相关的数量性状位点(QTLs)以陆地棉(Gossypium hirsutum L.)中棉所8号和海岛棉(Gossypium barbadense L.) Pima90杂交产生的 F2群体为材料,利用 SSR 标记对构建棉花遗传图谱及纤维品质性状 QTLs 定位进行研究。结果表明:构建了包含15个连锁群和102个标记位点(其中25个标记位点前人未曾报道)的连锁图谱,图谱总长642.1 cM,约占棉花基因组的14.4%,标记间平均距离为6.3 cM。15个连锁群中的6个分别被定位于5条染色体上,9个连锁群未定位于染色体上。应用复合区间作图法分析 F2单株和 F2∶3家系的纤维品质性状,检测到11个与纤维品质有关的 QTLs,包括 2个纤维长度(FL),4个马克隆值(FM),3个比强度(FS),2个伸长率(FE),分别解释表型变异的19.1%~24.8%、8.9%~16.9%、11.8%~19.0%和12.2%~34.3%。
為進一步增加特異性分子標記,填補棉花遺傳圖譜密度空隙,挖掘與纖維品質緊密相關的數量性狀位點(QTLs)以陸地棉(Gossypium hirsutum L.)中棉所8號和海島棉(Gossypium barbadense L.) Pima90雜交產生的 F2群體為材料,利用 SSR 標記對構建棉花遺傳圖譜及纖維品質性狀 QTLs 定位進行研究。結果錶明:構建瞭包含15箇連鎖群和102箇標記位點(其中25箇標記位點前人未曾報道)的連鎖圖譜,圖譜總長642.1 cM,約佔棉花基因組的14.4%,標記間平均距離為6.3 cM。15箇連鎖群中的6箇分彆被定位于5條染色體上,9箇連鎖群未定位于染色體上。應用複閤區間作圖法分析 F2單株和 F2∶3傢繫的纖維品質性狀,檢測到11箇與纖維品質有關的 QTLs,包括 2箇纖維長度(FL),4箇馬剋隆值(FM),3箇比彊度(FS),2箇伸長率(FE),分彆解釋錶型變異的19.1%~24.8%、8.9%~16.9%、11.8%~19.0%和12.2%~34.3%。
위진일보증가특이성분자표기,전보면화유전도보밀도공극,알굴여섬유품질긴밀상관적수량성상위점(QTLs)이륙지면(Gossypium hirsutum L.)중면소8호화해도면(Gossypium barbadense L.) Pima90잡교산생적 F2군체위재료,이용 SSR 표기대구건면화유전도보급섬유품질성상 QTLs 정위진행연구。결과표명:구건료포함15개련쇄군화102개표기위점(기중25개표기위점전인미증보도)적련쇄도보,도보총장642.1 cM,약점면화기인조적14.4%,표기간평균거리위6.3 cM。15개련쇄군중적6개분별피정위우5조염색체상,9개련쇄군미정위우염색체상。응용복합구간작도법분석 F2단주화 F2∶3가계적섬유품질성상,검측도11개여섬유품질유관적 QTLs,포괄 2개섬유장도(FL),4개마극륭치(FM),3개비강도(FS),2개신장솔(FE),분별해석표형변이적19.1%~24.8%、8.9%~16.9%、11.8%~19.0%화12.2%~34.3%。
In order to increase the linkage map markers of cotton,so as to fill the gap of genetic map density,and detect the QTLs related to fiber qualities,An F2 population from a cross between CRI 8 (Gossypium hirsutum)and Pima 90 (Gossypium barbadense )was used to construct the linkage map with simple sequence repeat (SSR).Results:This map included 102 markers distributing on 15 linkage groups (25 markers is not reported),covering 642.1cM,accounting for 14.4% of the cotton genome,and with an average distance of 6.3 cM between two markers.six out of 15 linkage groups were located on five chromosomes,and nine linkage groups were not located on any chromosomes.The fiber quality of the F2 plants and the F2∶3 family lines were analyzed by composite interval mapping and 11 quantitative trait loci of fiber quality were identified in the genetic map and these traits involved the QTLs of two fiber lengths, four fiber micronaires,three fiber strengths,two fiber elongations.The QTLs separately explained 19.1%~24.8%,8.9%~16.9%,11.8%~19.0% and 12.2%~34.3% of the phenotypic variations in the four traits.