Fig. 2: Gene family and phylogenetic tree of O. viciifolia and selected species.

a Phylogenetic tree of O. viciifolia and 18 other Fabales and non-Fabales species. The numbers at each node represent the divergence time, and the time range in brackets is based on the 95% confidence interval. The pie chart represents the expansion and contraction of gene families, with blue for expansion and red for contraction, and the numbers next to the pie chart represent the number of gene families with expansion and contraction. b Venn diagram for gene families in C. arietinum, M. sativa, O. viciifolia, and L. japonicus. c LTR insertion time and density in six Fabales plants.