Specific polyploidization in Begoniaceae generates inter-subgenomic retention level balance. (A) Gene retention of B. loranthoides subgenomes along orthologous regions corresponding to V. vinifera chromosome. A, Retention rates of genes in sliding windows of B. loranthoides homologous region group 1 (red line) and homologous region group 2 (black line), using V. vinifera as the reference; B, Retention rates of genes in sliding windows of B. loranthoides homologous region group 3 (blue line) and homologous region group 4 (green line); C, Difference in gene retention between sliding windows of B. loranthoides homologous groups 1 and 2 (blue line), and the red line is the difference between homologous groups 3 and 4. (B) The retention of B. loranthoides, using V. vinifera chromosome 1 as a reference, is consistent with that in the a-figure. (C) The gene loss rates of B. loranthoides with the V. vinifera genome as a reference. x-axis indicates the number of consecutive lost genes, y-axis indicates the number of lost fragments, and the red curve is the fit of gene loss.