ISHS Acta Horticulturae 286: International Symposium on Olive Growing
SEASONAL CHANGES OF GLUCOSE, POTASSIUM AND RUBIDIUM IN ‘GORDAL SEVILLANA’ OLIVE IN RELATION TO FRUITFULNESS |
| Authors: | J.A. Márquez, M. Benlloch, L. Rallo |
| Abstract:
Fruitfulness influences the partitioning of assimilates in olive during the reproductive phase. Seasonal changes of the concentration of glucose, potassium and rubidium in different organs indicated that the current-year growth was the main sink in the de-fruited bearing shoot while the fruit was in the fruiting shoot. Normal fruit of ‘Gordal Sevillana’, a cultivar with normal and parthenocarpic fruits, showed higher rate of growth and content of assimilates and mineral nutrients than parthenocarpic fruit from 15 days after full bloom (FB+15) to harvest. Consequently normal fruit was the strongest sink in this period. Those data suggest that the sink strength and therefore the assimilates partitioning is a major factor in regulating fruit set in olive. | |
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