TLC determination of flavonoid accumulation in clonal populations of Passiflora incarnata L

Flavonoid production and accumulation during the ontogenic cycle of Passiflora incarnata L. was studied. The highest concentration of isovitexin occurred between pre-flowering and flowering stages. The greatest accumulation of flavonoids took place in the leaves. Furthermore some pharmacodiagnostic characteristics of the drug of P. incarnata were specified using a Scanning Electron Microscope.