Coverage and number of markers for each RIL and their parents. A Coverage of SLAF markers. B Number of SLAF markers. The x-axes in A and B indicate the plant accession including the female parent (Luheidou2, designated as P1) and the male parent (Nanhuizao, designated as P2) followed by each of the RILs. The y-axis in A indicates the coverage of markers (fold) and the y-axis in B indicates the number of markers.