ISHS Acta Horticulturae 791: V International Symposium on Olive Growing
ANNUAL VARIATION OF LEAF PROTEINS OF FOUR RECOGNIZED OLIVE VARIETIES IN TURKEY |
| Authors: | N. Varol, A. Tanrisever |
| Keywords: | olive, alternate bearing, protein analyses, electrophoresis, SDS-PAGE |
| Abstract:
In this study, the annual protein alterations in bearing and non-bearing olive trees were investigated in the leaves of Ayvalık, Domat, Gemlik and Memecik varieties that display different bearing levels. Quantitative protein analyses were performed on leaf samples of olive trees that are collected at fourteen periods between June 2000 and January 2002. Protein levels of the leaves varied considerably depending on the phenological period of the trees. Although the variation was different for each olive variety, it was established to be between 39.2 mg/ml at maximum and 0.5 mg/ml at minimum. The leaf protein level of all varieties of bearing trees reached a maximum at the full blooming and early fruit development and was at a minimum during the morphological differentiation period. The highest protein level difference between the bearing and non-bearing trees belonged to the Memecik variety, which has the highest bearing alteration. In reverse, this difference was lowest for the Domat variety. This study showed a close correlation between the level of fruit yield on the trees and the quantity of leaf protein. We believe that this correlation can be used to estimate the yield in advance by evaluating the level of the leaf protein in June. | |
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