Further studies of synergism in slit pea test

Abstract

The wvork reported in this paper, which is a continuation of that presented earlier (9), had two primary objectives. The first was to determine whether or not sparing of IAA3 by IAN from IAA oxidase could be involved in IAN-IAA synergism in the slit pea test. The second was to determine more completely the kind and extent of growth occurring.If IAA oxidase were of major importance in the interaction of IAN-IAA, no synergism should be expected with either NAA or 2,4-D, which presumably are not attacked by the oxidase (5,13). Van Raalte (18)