Integrated genetic map for M. sinensis. Markers on each of the 19 linkage groups are shown as horizontal lines at their estimated map position on the integrated map, with scale in centiMorgans on left. Marker type is shown by color (blue, heterozygous in GF only; orange, heterozygous in UN; black, heterozygous in both GF and UN). Markers that are heterozygous in both parents allow individual parental maps to be combined. Marker types and positions are specified in Additional file 9: Table S5. Linkage groups are numbered based on extensive synteny with sorghum (see Figure 4).