Fig. 2From: Unravelling the genetic diversity and population structure of common walnut in the Iranian PlateauBayesian inference of the number of clusters (K) from 2 to 4 of J. regia by STRUCTURE. (a) Different colors indicate various genetic components, green for G1, blue for G2, yellow for G3, and orange for G4. (b) The optimal K value using the Delta K (ΔK) method. (c) Mean log-likelihood of the data at varying estimates of K Back to article page