ISHS Acta Horticulturae 662: VII International Symposium on Temperate Zone Fruits in the Tropics and Subtropics
CONSEQUENCES OF INSUFFICIENT WINTER CHILLING ON APPLE TREE BUD-BREAK |
| Authors: | J.L. Petri, G.B. Leite |
| Keywords: | apple, budbreak, flowering, lack of chilling, consequence |
| DOI: | 10.17660/ActaHortic.2004.662.4 |
| Abstract:
Temperate fruit trees cultivated in regions of mild winter conditions, show several anomalies. Such anomalies are described, in a general way, as the budbreak absence and/or flowering delay. But after budbreak, fruit trees go on displaying anomalies like: paralysis of the shoot growth, development of small leaves, development of small flat shape fruits, low rate of effective fructification and reduction of the flowering-maturation cycle. Budbreak inductors do not influence the development of new leaves, and several times they stop the growth after budbreak. Among the problems of lack of chilling, the size and shape of the fruits, the low effective fructification and formation of small leaves in the shape of rosette are those that manifest more after artificial budbreak induction. | |
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