Fig. 1

Information on the three Primula mitogenomes. The circular mitogenomes of Primula smithiana (orange), Primula palinuri (purple), and Primula valentiniana (blue) are illustrated as linear. The outer circle represents the gene and its location from outside to inside. Yellow indicates a protein-coding gene, black indicates a tRNA gene, and purple indicates a rRNA gene. The inner portion indicates mitogenome length, and the black part indicates MTPTs. The line diagrams in the inner circle represent the coverage and GC content per 500-bp window size. The innermost chord diagram represents the shared sequences between the three mitochondrial genomes, whereas the height of the histogram represents the length of each shared area