Autoradiographic study of the incorporation of precursors of polysaccharides and lipids in microsporocytes and tapetum of « Rhoeo discolor » Hance.OnRhoeo discolor, the localization and the level of polysaccharide and lipid synthesis were determined in the evolving pollen mother cells (PMC) and plasmodial tapetum by applications of3H-glucose,3H-myo-inositol,3H-acetate,3H-choline and14C-meva lonate on excised anthers during variable time intervals.