Phylogenetic Description of Curcuma
Member of Curcuma genus are though morphologically distinguished but the distance calculated based on sequence dissimilarity was forund to be very low. This is not very surprising keeping the point in consideration that they all have overlapping flowering time and some what similar flower morphology.
The phylogenetic tree reconstructed over Kimura 2 distance calculated by pairwise allignment using Neighbor Joining method of tree construction.
Dendrograms indicating the phylogenetic relationship of Curcuma species from NE India, as revealed by UPGMA cluster analysis using SHAN neighbor-joining tree based on polymorphic markers. The genetic distances were from Dice similarity coefficient. (Das et al 2011)