UPGMA based dendrogram of Curcuma species based on GC/MS analysis of essential oil. The numerical scale indicates genetic similarity.a(a) Essential oil fromrhizomes of eight starchy Curcuma species and of C. longa was subjected to GC/MS analysis. Species were scored for the presence (1) or absence (0) of individual essential oilcomponents with ≥0.5% concentration. Data analyzed using NTSYS – pc version 2.1 software and dendrogram generated based on the UPGMA cluster. The numerical scaleindicates genetic similarity and the members in specific cluster/groups are genetically related with similar/near coefficient value.