Fig. 6.
The species-specific selection pattern of gene retention in barley and bread wheat pangenome lines. A Distribution of the ratio (Rbw) of GRR_barley to GRR_wheat. The target genes were divided into three categories: Rbw ≥ 1.2 (red color), 1.1 > Rbw > 0.9 (gray color), and Rbw ≤ 0.8 (red color) for enrichment analyses. B Donut chart displaying the distribution of gene duplication types for each gene category. The total gene number of each category was labelled at the center. C Comparative GO enrichment analyses for the three gene retention categories in barley and bread wheat pangenome lines. Each category implies different selection pressure acting on gene retention. A threshold of 1e−5 was used to filter the enriched GO terms. No significantly enriched cellular component item was found for the neutral and wheat preferential gene categories