DG Haplotype and Pedigree Analysis. Graphical representation of chromosome 6 haplotypes determined for six sorghum accessions by DG analysis of FseI and NgoMIV markers. The region of chromosome 6 from 0.0 to 45.2 Mbp is represented. On the left, FseI-derived DG markers with their corresponding genetic and physical locations are marked. For each FseI DG marker an underlying NgoMIV marker was also generated. Mbp values in bold represent haplotype block transitions determined by NgoMIV markers. Details on additional intervening NgoMIV markers can be found in Additional file 2. The approximate location of the centromere with the physical coordinates of the two closest NgoMIV markers is shown. The physical location of Ma1 and genetic location of Dw2 are also shown. For the six sorghum accessions colored blocks represent haplotypes.