ISHS Acta Horticulturae 275: International Symposium on the Culture of Subtropical and Tropical Fruits and Crops
INTERACTION OF PLANT GROWTH REGULATOR AND CARBOHYDRATE IN FLOWERING AND FRUIT SET |
| Authors: | J.P. Bower, J.G.M. Cutting, C.J. Lovatt, M.M. Blanke |
| Abstract:
Biennial or alternate bearing is common in many tree crops. This is particularly problematical in avocados. Some researchers have attempted to use stored carbohydrate levels, particularly of the trunk or roots, to predict the potential yield of the next season's crop. Those favouring a plant growth regulator approach, however, are of the opinion that a healthy tree can compensate photosynthetically, for a high fruit load, and that suppression of flowering and fruit set following a heavy crop is PGR controlled. A hypothesis integrating both aspects in the regulation of flowering and early fruit retention is presented. | |
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