Fig. 4

The analysis of homologous gene pairs in the BBX gene family. a Identification of paralogs and orthologs in D. officinale and P. equestris. Green, bule and red lines indicated orthologs gene pairs (Do-Pe), paralogs gene pairs (Pe-Pe), and paralogs gene pairs (Do-Do), respectively. b and c The distribution of Ka/Ks, Ks, Ka values of homologous gene pairs. The slopes of Ka/Ks =1 and 0.5 were represented by black and gray lines, respectively