Effects of a Pregermination Pulse Treatment with Morphactin on Pisum Sativum

Abstract

A 24·hr pregermination application of morphactin to seeds of P. sativum was found, particularly at the higher concentrations used (1-30 mg/l), to stimulate primary root elongation but partially inhibit the initiation and growth of laterals. The latter effect was accompanied by the production of undifferentiated outgrowths at the base of the primary root and a shift of the region of lateral root formation towards the tip.