Figure 2.

Forty-seven NBS-LRR genes localize to a 2.45-Mb region at the peritelomeric end of chromosome XIX. The physical length is estimated by the assembled sequence scaffold lengths plus the averaged gap length among scaffolds. The green portion of the vertical bar indicates the distorted region; the blue portion indicates the nondistorted region; the white portion indicates sequence gaps; the horizontal black bars show the physical positions of NBS-LRR genes; and the red letters are the serial number of NBS-LRR genes based on their physical orders along the chromosome. The ruler to the left of the chromosomal bar indicates the physical length in base pairs. Only one NBS-LRR gene would be expected in the corresponding 2.45-Mb region based on a uniform average genome-wide distribution assumption.