Use of multivariate analysis to assess phenotypic diversity of date palm (Phoenix dactylifera L.) cultivars |
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Authors: | Mohamed Vall O. Mohamed Ahmed Zein Elabidine O. Bouna Fouteye M. Mohamed Lemine Taleb Khyar O. Djeh Trifi Mokhtar Ali O. Mohamed Salem |
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Affiliation: | 1. Laboratoire de Biotechnologie, Faculté des Sciences et Techniques, Université de Nouakchott, BP 5026 Nouakchott, Mauritania;2. Laboratoire de Génétique Moléculaire, Immunologie et Biotechnologie, Faculté des Sciences de Tunis, Université Tunis el Manar, Campus Universitaire, 2092-el Manar, Tunisia |
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Abstract: | Twenty one date palm (Phoenix dactylifera L.) accessions originated from different date palm groves were studied to assess the overall degree of polymorphism, detect similarities between genotypes and assess important agronomic traits. Thirty vegetative and reproductive variables were scored and subjected to multivariate analysis. Results showed a considerable phenotypic diversity among local date palm germplasm. Principal component analysis (PCA) revealed that characters related to leaflets length and spine, fruit and seed sizes accounted for a large proportion of the observed variability. Cluster analysis (CA) showed a typically continuous phenotypic diversity among date palm accessions and little associations between accessions from same geographic origin. Also, some heterogeneity within accessions that received the same denomination was evidenced. |
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Keywords: | Cultivars Date palm Diversity Multivariate analysis Mauritania |
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