Fig. 3: Whole-genome duplication and genetic collinearity analysis.

a Distribution of transposable elements in the sponge gourd genome. b Whole-genome duplication (WGD) events detected in the genomes of Luffa cylindrica (Lcy), Cucumis sativus (Csa), C. melo (Cme), Citrullus lanatus (Cla), and Cucurbita moschata (Cmo), with the distribution of transversion substitutions at fourfold degenerate sites (4dTv) shown on the left and the divergence time between Lcy and other species shown on the right. c Schematic representation of synteny between L. cylindrica and Cucumis sativus, C. melo, Citrullus lanatus, and Cucurbita moschata. Each line connects a pair of orthologous genes between genomes