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Science 3 April 1959:
Vol. 129. no. 3353, pp. 896 - 897
DOI: 10.1126/science.129.3353.896-a
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Articles

Interaction of Gibberellic Acid and Indoleacetic Acid in Impatiens

J. WEIJER 1

1 Department of Plant Science, University of Alberta, Edmonton

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.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)