Genomic scan to identify outlier loci subject to selection by Bayescan approach.

Each point corresponds to an AFLP locus. F_ST is plotted against the log₁₀ of the posterior odds (PO), which provides evidence whether the locus is subject to selection or not. The vertical dashed line shows the decisive threshold value (log₁₀ PO = 2.0) used for identifying outlier loci. (A) The result of Mikania micrantha. Shown as red dots, the 38 outlier loci with the corresponding locus number are candidates for being under positive selection. (B) The result of Mikania cordata. No outlier locus under selection is detected.