Fig. 6From: Genome-wide identification, phylogeny, and expression analysis of the SBP-box gene family in EuphorbiaceaeKa, Ks and their ratio. Gene pairs from different species are indicated by different scatter. The x and y axes denote Ks and Ka for each gene pair and the black line represents Ka/Ks ratio = 1. The –S range are the gene pairs whose Ks value less than 1, and the –L range are the gene pairs whose Ks value more than 1. Detailed values of Ka, Ks and Ka/Ks listed in Additional file 1: Table S4Back to article page