Genetic diversity analysis by the morphometric tool of some olive tree (Olea europaea) varieties in Western Algeria

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Research Paper 01/02/2018
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Genetic diversity analysis by the morphometric tool of some olive tree (Olea europaea) varieties in Western Algeria

Mohamed Sidhoum, Moustafa Yassine Mahdad, Mohamed Draoui, Imane Meghelli, Amina Bellatreche, Semir Bechir Suheil Gaouar
Int. J. Biosci.12( 2), 14-25, February 2018.
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The diversity of the olive trees in Algeria is to some extent ambiguous. Thus an inventory has been effected in western Algeriatocollect local and introduced varieties of the olive tree (Olea europaea) in view of their morphological characterization. In fact, a collection of 25 traditional and modern accessions of the olive tree was studied using eleven quantitative agro-morphological traits. Phenotypic diversity was determined by the diversity index of Shannon-Weaver (H’’) at several levels (Total sample, by typology and by variety name). The H’ estimates showed a large phenotypic variability for the various traits with an average H’ of 0.66.  Hence the results of the analysis of the multiple correspondences and the hierarchical classification showed a clear distinction between the different accessions. The results of this work revealed the great phenotypic diversity of the olive varieties, which partly corresponds to the names of the varieties because of the existence of homonyms and synonyms in the names given by the farmers. The results show that these local accessions (whose genetic composition remains to be studied with more precision) are mainly cultivated by traditional farmers who conserve this genetic resource.


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