Plantlets produced in vitro from rhizomes of Kaempferia parviflora were used as the source of
explants for microrhizome development. Sixty percent of the plantlets formed microrhizomes in
liquid medium supplemented with1 mg/L BAP+1 mg/L NAA, with 60 g/L sucrose. The treatment
gave the highest fresh weight of microrhizomes, at 265 mg/plantlet. This optimized protocol is
suitable for the commercial production of disease-free Kaempferia microrhizomes that can be
stored and transported easily.