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Morphological and molecular diversity and genetic structure of Moroccan cultivated almond (Prunus dulcis Mill.) beside some foreign varieties

Published online by Cambridge University Press:  27 February 2014

Abdelali El Hamzaoui ,
Ahmed Oukabli  and
Mohiéddine Moumni
Abdelali El Hamzaoui
Affiliation:
Plant Breeding and Genetic Resources Unit, INRA, Regional Agricultural Research Centre of Meknes, Haj Kaddour Road, Box 578, Meknes, Morocco Department of Biology, Faculty of Science, Moulay Ismaïl University, BP 11 201, Zitoune, Meknes50000, Morocco
Ahmed Oukabli*
Affiliation:
Plant Breeding and Genetic Resources Unit, INRA, Regional Agricultural Research Centre of Meknes, Haj Kaddour Road, Box 578, Meknes, Morocco
Mohiéddine Moumni
Affiliation:
Department of Biology, Faculty of Science, Moulay Ismaïl University, BP 11 201, Zitoune, Meknes50000, Morocco
*
* Corresponding author. E-mail: oukabli2001@yahoo.fr
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Abstract

In this study, 15 morphological traits and 16 microsatellite markers were used to assess the morphological variability and structure of 68 (33 local and 35 foreign) almond accessions (Prunus dulcis (Mill.) D.A. Webb). Extensive phenotypic diversity was found among the accessions, and results indicated a high variation in leaf and fruit traits. Varieties were separated into two distinct groups with a similarity coefficient of 0.761. Morphological traits were categorized by principal component analysis into five components, which explained 86.5% of the total variation. Nut and kernel traits were dominant in the two first components, accounting for 49.4% of the variation. By contrast, leaf traits accounted for 18.4% of the variation in the third component. The results of molecular analysis (Bayesian clustering approach) did not correspond to morphological groupings, and the second approach was more discriminate. The combination of both approaches revealed the richness among the collected plant materials, which will be useful in breeding programmes of this species.

Keywords

almond (Prunus dulcis)genetic structuregermplasm collectionmicrosatellitemorphological marker
Type
Research Article
Information
Plant Genetic Resources , Volume 12 , Issue 3 , December 2014 , pp. 308 - 316
Copyright
Copyright © NIAB 2014 

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