ISHS Acta Horticulturae 80: Symposium on Growth Regulators in Fruit Production
METABOLISM OF 3H GIBBERELLIN A4 IN RELATION TO FLOWER INITIATION IN APPLE |
| Authors: | N.E. Looney, A. Kamienska, R.L. Legge, R.P. Pharis |
| Abstract:
Partial defruiting of spur-type 'Golden Delicious' trees at 5 or 21 days after full bloom (DAFB) and/or succinic acid-2,2-dimethylhydrazide (SADH) applied 14 DAFB created a gradient in the tendency for 'on-year' biennial trees to flower again the next season. The percent of spurs flowering in 1977, and the rate at which spurs on the same trees converted tritiated gibberellin A4 (3H-GA4) to more polar products in 1976, appeared to be positively related. Vegetative growth was in general negatively related to return flowering but was not clearly related to rate of 3H-GA4 metabolism by the spurs. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
