Genomic distribution of the QTLs for leaf number and flowering time traits The 10 chromosomes are shown as gray bars. Colored rectangles and ovals depict the 2-LOD support intervals for the QTLs identified in the BA population, as indicated. DTH, days to heading; DTS, days to silking; DTA, days to anthesis; LA, number of leaves above the primary ear; LB, number of leaves below the primary ear; TLN, total leaf number. Hn and Hf represent Hainan and Hefei, respectively, which are two locations in China with distinct climates. Previously reported genes are indicated above the chromosomes.