CAJ | 학술논문

　　利用昌7-2与热带自交系CML451构建的BC1群体开花期、株高以及产量相关性状进行QTL定位分析。通过复合区间作图方法共检测到与散粉期、抽丝期、株高、穗位高、穗长、穗粗、穗轴粗、穗行数8个性状相关联的QTL 26个。控制散粉期的qDTP5被定位于第5染色体上的umc1523-bnlg1660标记区间，其解释了16%表型变异；控制株高的qPH3被定位于第3染色体上的bnlg1798-bnlg1852标记区间，解释了19.9%表型变异；控制穗位高的qEH10-2被定位于第10染色体上的umc1911-bnlg594标记区间，解释了13.4%表型变异；控制穗长的qEL10-2被定位于第10染色体的bnlg1250-bnlg594区间，解释了13%表型变异；控制穗粗的qED5、控制穗轴粗的qCD5、控制穗行数的qER5均被定位于第5染色体上的bnlg1660-bnlg1208区间，分别解释了18.1%、11.3%与21.8%表型变异；qED7定位于第7染色体上的umc1154-umc1799区间，与穗粗相关，解释了21.9%表型变异。
　　이용창7-2여열대자교계CML451구건적BC1군체개화기、주고이급산량상관성상진행QTL정위분석。통과복합구간작도방법공검측도여산분기、추사기、주고、수위고、수장、수조、수축조、수행수8개성상상관련적QTL 26개。공제산분기적qDTP5피정위우제5염색체상적umc1523-bnlg1660표기구간，기해석료16%표형변이；공제주고적qPH3피정위우제3염색체상적bnlg1798-bnlg1852표기구간，해석료19.9%표형변이；공제수위고적qEH10-2피정위우제10염색체상적umc1911-bnlg594표기구간，해석료13.4%표형변이；공제수장적qEL10-2피정위우제10염색체적bnlg1250-bnlg594구간，해석료13%표형변이；공제수조적qED5、공제수축조적qCD5、공제수행수적qER5균피정위우제5염색체상적bnlg1660-bnlg1208구간，분별해석료18.1%、11.3%여21.8%표형변이；qED7정위우제7염색체상적umc1154-umc1799구간，여수조상관，해석료21.9%표형변이。
Analysis of quantitative trait loci(QTL) for flowering time, plant height, and yield related traits was performed with a BC1 population derived from the cross between an elite line Chang7-2, as recurrent parent, and an elite tropical inbreed line CML451. A total of 26 QTLs were detected with composite mapping method for 8 traits, days to pollen-shedding(DTP), days to silking(DTS), plant height(PH), ear height(EH), ear length(EL), ear diameter(ED), cob diameter(CD), number of rows on an ear(ER). The DTP associated QTL qDTP5 located in the interval of umc1523-bnlg1660 on the chromosome 5 explained 16%of the phenotypic variation, the PH associated qPH3 located in the interval of bnlg1798-bnlg1852 on chromosome 3 explained 19.9%of thephenotypic variation;the EH associat-ed qEH10-2 located into the interval of umc1191-bnlg594 on chromosome 10 explained 13.4% of the phenotypic variation ; the EL controlling QTL qEL10-2 located into the interval of bnlg1250-bnlg594 on chromosome 10 ex-plained 13%of the phenotypic variation;the ED associated qED5, the CD associated qCD5 and the ER associated qER5 were all mapped to the same interval of bnlg1660-bnlg1208 on the chromosome 5, which explained 18.1%, 11.3% and 21.8% of the phenotypic variation, respectively; the ED associated qED7 located into the interval of umc1154-umc1799 on the chromosome 7 explained 21.9%of the phenotypic variation.