Fig. 2From: Analysis of complete chloroplast genome sequences and insight into the phylogenetic relationships of Ferula L.Relative synonymous codon usage (RSCU) values of all merged protein-coding genes for 14 Ferula plastomes. Color key: red values indicate higher RSCU values, and blue values indicate lower RSCU values. M = initiation codon, * = termination codon, I = l-isoleucine codon, and V = Valine codonBack to article page