Figure 3 from: Du W, Wang Y, Xie D, Li E, Bai Y, Shang C, Zhang Z (2024) Phylogenomics reveal Populus gonggaensis as a hybrid between P. lasiocarpa and P. cathayana (Salicaceae). PhytoKeys 237: 161-177. https://doi.org/10.3897/phytokeys.237.103012

Figure 3 Hybrid introgression analysis using SNP matrix of Populus species A the results of ABBA-BABA statistics which measured gene flow amongst 12 species when P3 = P. gonggaensis. When D > 0 and the D value is further away from 0, it indicates that a gene swap or hybridisation event is more likely to have occurred, which means the genes of P3 is more likely to swap with those of P1 or P2 B population structure analysis for 12 species of Populus (K = 9). Each coloured bar represents one individual and coloured segments represent proportions of ancestral components. The number of individuals and species names for each lineage are shown at the bottom.