【摘要】 以一套用籼稻品种9311为受体、粳稻品种日本晴为供体构建的128个染色体片段代换系为材料,按随机区组实验设计种植,于成熟后考查代换系粒长、粒宽性状,利用多元回归分析方法,结合Bin图谱,鉴定出6个与粒长相关的QTL、2个与粒宽相关的QTL。其中,qGL3.1被定位在水稻第3染色体的5 792 954bp区间内;qGL3.2被定位在第3染色体的917 878bp区间内;qGL8.1被定位在第8染色体的889 543bp区间内;qGL8.2被定位在第8染色体的208 614bp区间内;qGL9.1被定位在第9染色体的1 149 685bp区间内;qGL11.1被定位在第11染色体的3 184 760bp区间内;qGW1.1被定位在第1染色体的200 070bp区间内;qGW5.1被定位在第5染色体的704 905bp区间内。上述QTL的准确定位,为进一步精细定位及克隆相应QTL和开展水稻粒型分子育种奠定了基础。更多还原

【Abstract】 One hundred and twenty-eight chromosome segment substitution lines derived from 9311 as recipient and Nipponbare as donor,were used for mapping QTLs for grain shape by combining the sequencing-based Bin-map with a multiple linear regression analysis.Six and two QTLs were identified for grian length(GL) and grian width(GW),respectively.qGL3.1 was mapped in a region of 5 792 954 bp on chromosome 3,qGL3.2 in a region of 917 878 bp on chromosome 3;qGL8.1 in a region of 889 543 bp on chromosome 8;qGL8.2 in a region of 208 614 bp on chromosome 8;qGL9.1 in a region of 1 149 685 bp on chromosome 9;qGL11.1 in a region of 3 184 760 bp on chromosome 11;qGW1.1 in a region of 200 070 bp on chromosome 1;and qGW5.1 in a region of 704 905 bp on chromosome 5.The results provided a foundation for fine mapping QTLs and subsequent gene cloning.更多还原