Fig. 2: Fractionation pattern on each reconstructed pear paleo-subgenome corresponding to 8 peach chromosomes.

The X axis indicates gene locations along each peach chromosome, and the Y axis indicates the proportion of orthologous syntenic genes retained in pear subgenome 1 (blue), subgenome 2 (red) and both subgenomes (green), corresponding to peach chromosomes. The percentage of retained orthologous genes in pear was calculated based on 100-gene sliding windows (black bars) along each peach chromosome. Tandem duplicate genes were excluded