ISHS Acta Horticulturae 820: VIII International Mango Symposium
PERMEABILITY OF CUTICULAR MEMBRANE DURING THE ONTOGENY OF MANGIFERA INDICA L. |
| Authors: | D. Petit-Jiménez, A. González-León, G. González-Aguilar, R. Sotelo-Mundo, R. Báez-Sañudo |
| Keywords: | Mangifera indica L., cuticle, cutin, permeability, waxes |
| Abstract:
The cuticular membrane covers the mangoes fruits surface, as well as the aerial surface in the plants. One of the cuticular functions is to restrict the water loss between the epidermis and adjacent environment of the plant. This permeability is related to the physical and chemical properties of the cuticle. With the objective to evaluate the permeability of the cuticles during the ontogeny of the fruits, ‘Tommy Atkins̉’, ‘Kent’ and ‘Keitt’ mangoes were sampled from an experimental orchard located at Navojoa, Sonora-México. The sampling was split into two stages: (1) growth and (2) maturation of the fruits. Cuticle permeability was related to the ultrastructure waxes. The permeability of the cuticles, as mg of water lost for every cm2 of cuticle, decreased progressively during the growth of the fruits in the three cultivates, being the biggest reduction near harvest. During maturation and senescence, progressive changes were observed in the permeability related with the time during storage. Differences between cultivars were found, where ‘Keitt’ presents the highest values. The best efficiency of the cuticle in regulating the water loss was during harvest and it was related to the changes in the content and ultrastructure of the waxes. | |
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