Fig. 5From: Transcriptomic divergence of the Rheum palmatum complex derived from top-geoherb and non-geoherb areas provides the insights into geoherbalism properties of rhubarbDistribution of Ka and Ks for 7,778 pairs of orthologs between top-geoherb and non-geoherb groups. The dots above the slash indicate the positive-selected genes, and the dots below the slash indicate the negative-selected genesBack to article page