Interaction of Gibberellic Acid and Indoleacetic Acid in Impatiens

Science  03 Apr 1959:
Vol. 129, Issue 3353, pp. 896-897
DOI: 10.1126/science.129.3353.896-a


Gibberellic acid promotes doubling, early flowering, and fruiting directly in Impatiens. It also lengthens the stem, probably through a neutralization of auxin inhibitors. Such a mechanism would leave the growth-promoting auxins unchecked to produce the increased elongation characteristic of gibberellin application. It seems that application of additional auxin produces a rapid build-up of the auxin inhibitor(s) in the plant.