The contribution to rooting in leafless winter plum cuttings of IBA applied to the epidermis

Abstract

SummaryThe variable rooting response to dipping Myrobalan B winter cuttings to varying depths in an aqueous acetone solution of IBA was due mainly to the solution running from the waxy epidermis and being absorbed through the cut base as the solvent evaporated. The application of IBA to the epidermis was largely ineffective, especially in the presence of adequate stimulus from IBA entering the basal cut surface. Hydrostatic pressure was not involved in the rooting response to increasing dipping depth.