Figure 8.

Major rearrangements between the rapa/oleracea and nigra genomes (a, b) and the rapa and oleracea genomes (c, d). Boxes bearing the same color represent homoeologous blocks while the hatched boxes represent large gaps (≥10 cM regions devoid of any markers). (a) Prominent rearrangements between the A/C and B genomes resulting in altered block arrangement (b) Block organization of one LG of the B genome harbours the blocks from two LGs in the A/C genome explaining the difference of one chromosome between the two genomes (c) B. oleracea genome-specific rearrangements (mainly translocations) after the divergence from the Rapa lineage (d) Block organization of two LGs of the C genome (C8, C9) can be derived from three LGs (A8, A9, A10) of the A genome suggesting that the difference of one chromosome between the A and C genomes could be either due to the gain of one of the these LGs in the Rapa lineage or a reduction of one LG in the oleracea genome.