Chemical and genetic diversity of two Mediterranean subspecies of Teucrium polium L.

► Investigation of chemical and genetic diversity of Corsican T. polium ssp. capitatum. ► Investigation of chemical and genetic diversity of Algerian T. polium ssp. polium. ► Study of chemical composition of essential oils using GC and GC/MS after column chromatography. ► Study of plant genetic structure using two chlororoplast markers and ribosomal nuclear markers. ► Chemical and genetic correlation.