Fig. 3.

Rhizome of Roscoea procera in different phenophases. a Rhizome in shoot bud initiation phase, b new tuberous rhizome emerged during the vegetative growth phase, c in flowering phase, new tubers started developed and older rhizome degenerating, d in fruiting phase, new tuberous rhizome attained its full size and secondary metabolite content started to stored in it, e during preparation of senescence phase, translocation of nutrients occurs from degrading aerial parts to newly developed rhizomes and it attained maximum level of secondary metabolites