ISHS Acta Horticulturae 205: Symposium on the Development of New Floricultural Crops, XXII IHC
GIBBERELLIC ACID INDUCED FLOWERING OF CONTAINERIZED CENTAUREA MONTANA L. |
| Author: | D. A. Cox |
| Abstract:
The effect of gibberellic acid-3 (GA) spray applications on flowering of Centaurea montana L. was studied to determine if GA could substitute for long-day promotion of stem elongation and flowering. Sprays of 25 or 100 μg GA/ml were applied 3 (monthly), 5 (biweekly) or 9 (weekly) times between 7 February and 4 April 1985. No stem elongation or flowering occurred when plants were untreated. Both rates of GA, at all application intervals, promoted stem elongation and flowering. Flowering was most rapid with 5 or 9 applications of 100 μg GA/ml. Nine applications of either GA rate and 5 applications of 100 μg GA/ml caused undesirable changes in leaf morphology and stem weakness; these effects were absent in other treatments. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
