Articles
METABOLISM OF 3H GIBBERELLIN A4 IN RELATION TO FLOWER INITIATION IN APPLE
Article number
80_15
Pages
105 – 114
Language
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.
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.
Authors
N.E. Looney, A. Kamienska, R.L. Legge, R.P. Pharis
Keywords
Online Articles (77)