FIG. 2.—

Phylogenetic analyses of Beta genomes. Phylogenetic trees based on nucleotide distances, (A) with backbone sequences of mt genomes and (B) with chloroplastic sequences, were constructed using BIONJ and Tree-Puzzle. (C) Phylogenetic tree based on rearrangement distances built with BIONJ. The trees were rooted using Beta macrocarpa. Branch lengths are proportional to substitution or rearrangement rates. For (A and B), bootstrap values (upper values for distance and lower values for likelihood) are reported.