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Acta Botanica Gallica
Botany Letters
Volume 144, 1997 - Issue 3
498
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I—SÈCRÈTIONS, PRODUCTION ET RÔLES

Structure des cires épicuticulaires des feuilles du palmier-dattier, Phoenix dactylifera L.

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Pages 327-332 | Published online: 27 Apr 2013
 

Summary

A scanning electron microscopic study of epicuticular waxes of leaves of the date-palm, Phoenix dactylifera L., reveals that these structures are absent in the youngest plantlets and begin to be extruded when plants are in three or four-leaf stages. In adults, two morphological patterns of waxes have been described: the first one consists of “filaments” in sixteen cultivars; the second one, consisting of “tubes”, is present on the upper face of leaflets in three cultivars.

Résumé

L'observation, en microscopie électronique à balayage, des cires épicuticulaires des feuilles du palmier-dattier, Phoenix dactylifera L., montre que ces formations sont absentes chez les très jeunes plantules. C'est à partir des stades trois à quatre feuilles que les pruines sont extrudées. Chez l'adulte, deux types morphologiques de cires ont pu être distingués: l'un en “filaments” chez seize variétés sur les dix-neuf examinées, l'autre en “tubes” chez trois variétés.

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