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Fig. 5 | Genome Biology

Fig. 5

From: The Tetracentron genome provides insight into the early evolution of eudicots and the formation of vessel elements

Fig. 5

Phylogenetic relationships and population structure of Tetracentron populations. a Geographic distribution of the sampling locations. b Results of STRUCTURE analysis, showing four significant genetic clusters. c Principal component analysis (PCA), with the proportion of the variance explained being 11.3% for PC1 and 5.20% for PC2. d A neighbor-joining (NJ) phylogenetic tree. e Correlation between Fst and geographic distance by Mantel test (r = 0.8417, p = 0.004). f Detection of gene flow between Tetracentron populations. Lines with arrows indicates gene flow and direction of gene flow. The color scale: red indicates strong gene flow and yellow indicates weak gene flow. The horizontal scale bar at the bottom (drift parameter) shows a tenfold average standard error of the entries in the sample covariance matrix

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