Fig. 3: Introgression signals between C. sinensis and CSR species.

a, The fb statistic indicated different introgression signals between groups. The value size of fd is indicated by the depth of the red color. b, Kernel density estimation of fd values in the CSA.G1 and CSS.G4 groups, using 20-kb windows. The presence of a green vertical line marked the top 5% fd regions for the CSA.G1 group, while a blue vertical line highlights the top 5% fd values for the CSS.G4 group. c, The percentage in regions within fd value bins for either CSA.G1 or CSS.G4 group. d, The KEGG pathway enrichment result for genes in the highest 1% fd regions of the CSS.G4-CSR.CT groups. e, A visualization of the region that has undergone introgression between CSR.CT and CSS.G4 group. The FLS gene was highlighted in yellow background. Fst, Dxy and π ratio were calculated per 20-kb window between the CSR.CT and CSS.G4 group. f, The phylogenetic tree of FLS gene; red, green and purple lines denoted the CSR.CT, CSR.CTR and CSS.G4 groups. FLS, flavonol synthase.