ISHS Acta Horticulturae 425: II International Pineapple Symposium
AXILLARY-BUD DEVELOPMENT AS IT DETERMINES SUCKERING IN ‘QUEEN VICTORIA’ AND ‘SMOOTH CAYENNE’ PINEAPPLES |
| Author: | A.P. Maerere |
| DOI: | 10.17660/ActaHortic.1997.425.34 |
| Abstract:
The development of pineapple axillary buds in cultivars ‘Queen Victoria’ (QV) and ‘Smooth Cayenne’ (SC) was studied in naturally flowering plants and those induced to flower with ethephon. In ‘QV’ there exists a continuous development of the buds throughout the vegetative phase of the plant. In ‘SC’, after their initiation buds enter a resting period that is broken only by floral induction or decapitation of the apical meristem. This would explain why unlike ‘SC’, ‘QV’ plants produce numerous suckers even before flowering. Floral differentiation and decapitation lead to faster development of buds near the stem apex. In ‘SC’ only a few (1 to 3) most proximal buds develop into suckers. With artificial flower induction these are usually the ones in the position of hapas, while under natural flowering slips are most favoured. For ‘QV’, however, almost all stem buds eventually develop. It is considered that the determining factor in axillary buds development and the emission of suckers is related to long distance correlative inhibition, that is strong in ‘SC’ and weak in ‘QV’. | |
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