By constructing nearly isogenic lines (NILs) that differ only at a single quantitative trait locus (QTL), we fine mapped the yield-improving QTL qGY2-1 to a 102.9-kb region on rice chromosome 2.

• 通过构建单个数量性状位点（quantitative trait locus； QTL）上的近等基因系（nearly isogenic lines； NILs），我们将高产QTL qGY2-1精细定位在水稻2号染色体上的102.；9-kb基因组区域内。