Floral Stimulus Movement in Perilla and Flower Inhibition Caused by Noninduced Leaves

Abstract
Photoperiodic control of flowering in the short day plant Perilla involves the transmission of a floral stimulus from induced leaves to the shoot apex. We have studied the basipetal movement of this stimulus and of 14C-labeled assimilates in plants with an induced leaf (donor) grafted into the uppermost internode of a vegetative plant in which the axillary shoots at various nodes along the stem function as receptors.