Studies on plant growth‐regulating substances LIII. The conversion of certain substituted ethylamines to active growth substances in plants

Abstract

SUMMARYA number of substituted phenylethylamines have been synthesised and their plant growth‐regulating activities, in standard wheat and pea tests, have been determined and compared with those of related substituted phenoxyethylamines, phenylacetic acids and phenoxyacetic acids.The effects of applying the most active amines to various plant species are described and the results are considered in relation to the possible ability of the plant to convert the amine into the physiological active acetic acid derivative.