Plant growth regulating properties of 1‐amino‐1‐methylethylphosphonic acid and its derivatives

Abstract

Abstract Seventeen derivatives of 1‐amino‐1‐methylethylphosphonic acid were synthesised and evaluated for plant‐growth‐regulating activity using Cucumis sativus and Triticum aestivum . The tested compounds exerted either moderate herbicidal action or stimulated plant growth. The structure‐activity relationships were similar to those observed earlier for the derivatives of 9‐aminofluoren‐9‐ylphosphonic acids (phosphonic analogues of morphactins).