Fig. 3

Phylogeny of Betulaceae based on CDS data and amino acid alignment of rpl22 gene. A Phylogenetic inference inferred by Maximum Likelihood (ML) and Bayesian inference (BI) analyses. BS and PP values are presented on the branches. Asterisks represent 100/1.0 support values. Major genera of Betulaceae are indicated by different colors. B Among these coding hotspots with nucleotide length greater than 200 bp, rpl22 showed the highest variation rate whose amino acid alignment is displayed on the right