Fig. 1From: Genetic variation, population structure and linkage disequilibrium in Switchgrass with ISSR, SCoT and EST-SSR markersSTRUCTURE analysis of the number of populations for K. The number of subpopulations (K) was identified based on maximum likelihood and ΔK values. The most likely value of K identified by STRUCTURE was observed at K = 2Back to article page