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Palynologie de deux variétés d'une espèce utile du Liban : le néfl ier du Japon (Eriobotrya japonica)

Mohamad Ali CHAKASS, Anne-Marie VERHILLE, Nicole d’ AMICO & Françoise BOUSSIOUD-CORBIÈRES

fr Adansonia 30 (1) - Pages 171-175

Published on 27 June 2008

Palynology in two varieties of a useful species from Lebanon: Loquat (Eriobotrya japonica).

In Lebanon, Eriobotrya japonica Lindl. (Thunb.) (Rosaceae) is a naturalized species. The tree is mainly cultivated for the nutritional and medicinal properties of its fruits. Two “varieties” are commonly distinguished according to fruit shape, rounded or pear-shaped. The researches of hybrids for these two taxa were unsuccessful. The comparison of pollinic characters into the two populations contributing to establish the origin of a reproductive incompatibility, the scale pollen morphology was studied for four samples taken on two groups, on one hand in light microscope, by a numerical treatment of various pollen types, on the other hand in scanning electron microscopy. The variations found were not significant. Determination of distinctive pollen characters does not make possible to select different taxa. Investigations of female genotype could possibly permit to separate two botanical populations for this agronomic and food resource which is appreciated in Mediterranean area.

Keywords :

Rosaceae, Eriobotrya japonica, agronomic and food resources, Lebanon, SEM, pollen morphology

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