In this article:

The fine structure of the surface wax of leaves of sultana vines has been examined using the carbon replica technique.

Leaf wax was found to be morphologically similar to the wax on the surface of grapes and to consist of a series of overlapping platelets.

A brief period (30 sec) of exposure to light petroleum vapour disorganized the platelet  structure of both leaf and fruit wax.

This treatment markedly increased the cubicular transpiration of both fruits and leaves.

The results are discussed in relation to the known chemical composition of those waxes. lt is suggested that the surface wax, which consists of overlapping platelets that are hydrophobic in nature, may be important in controlling cuticular transpiration in both the fruit and leaves of grapevines.

Cuticular Transpiration and Wax Structure and Composition of Leaves and Fruit of Vitis vinifera

1967, Australian Journal of Biological Sciences, vol 20, pages 1149 – 1153

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