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- Title
The Action of Gibberellic Acid in the Avena Coleoptile Curvature Test.
- Authors
Sæbø, Stein
- Abstract
GA is active in the Avena coleoptile curvature test, increasing negative and decreasing positive curvatures by a few degrees. An interaction between GA and IAA is noted. Three assumptions are made to explain the joint action of GA and IAA in the curvature test: 1.. There is a. synergism between GA and IAA, IAA or other auxin being necessary to the action of GA. The synergism may be of a competitive nature. 2. GA transport is strictly longitudinal at low concentrations, a transverse transport taking place only at higher concentrations. 3. There is some residual, endogenous auxin left in the coleoptile after two decapitations.
- Subjects
PHYSIOLOGICAL effects of gibberellic acid; OATS; PHYSIOLOGICAL effects of auxin; GRAIN; PLANT hormones; PLANT physiology
- Publication
Physiologia Plantarum, 1960, Vol 13, Issue 4, p839
- ISSN
0031-9317
- Publication type
Article
- DOI
10.1111/j.1399-3054.1960.tb08107.x