ISHS Acta Horticulturae 343: Physiological Basis of Postharvest Technologies
PHYSIOLOGICAL AND ULTRASTRUCTURAL CHANGES DURING THE RIPENING AND SENESCENCE OF CLEMENTINE MANDARIN |
| Authors: | R. Báez-Sañudo, F.R. Tadeo, E. Primo-Millo, L. Zacarias |
| Abstract:
The qualitative and quantitative composition of epi- and intracuticular waxes during the ripening and senescence of Clementine mandarin (Citrus reticulata [Hort] Ex. Tanaka, cv Nules) fruit, and the effects of Gibberellic Acid (GA3) and Benzyladenine (BA) on these components, were studied. The fatty acid fraction was the most abundant in both, epi- (50–55%) and intracuticular (70–35%) waxes. The proportion of odd/even-numbered fatty acids in epicuticular waxes shifted during postmaturation of the fruit, and the content of alkanes longer than C26 increased substantially. These alteration were suppressed by GA3 application. Hexadecanoic (C16) and octadecanoic (C18) acids were the major components on the intracuticular fatty acid fraction. GA3 and BA differentially increased the relative proportion of the components of this fraction. The permeability of isolated cuticles declined during the ripening and senescence of the fruits. Cuticles from GA3 or BA-treated fruits have higher and lower rates of water loss, respectively. | |
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