Fig. 4From: Plastome phylogenomic study of Gentianeae (Gentianaceae): widespread gene tree discordance and its association with evolutionary rate heterogeneity of plastid genesThe estimations of nonsynonymous (dN), synonymous (dS) substitution rates and dN/dS of a plastid protein-coding genes (PCG), and of b functional groups of genes. Detailed information of functional group is provided in Table 2Back to article page