Horizon / Plein textes La base de ressources documentaires de l'IRD

IRD

Publications des scientifiques de l'IRD

Moussouni S., Pintaud Jean-Christophe, Vigouroux Yves, Bouguedoura N. (2017). Diversity of Algerian oases date palm (Phoenix dactylifera L., Arecaceae) : heterozygote excess and cryptic structure suggest farmer management had a major impact on diversity. Plos One, 12 (4), e0175232 [14 p.]. ISSN 1932-6203

Fichier PDF disponible http://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers17-05/010069992.pdf

Lien direct chez l'éditeur doi:10.1371/journal.pone.0175232

Titre
Diversity of Algerian oases date palm (Phoenix dactylifera L., Arecaceae) : heterozygote excess and cryptic structure suggest farmer management had a major impact on diversity
Année de publication2017
Type de documentArticle référencé dans le Web of Science WOS:000399955600013
AuteursMoussouni S., Pintaud Jean-Christophe, Vigouroux Yves, Bouguedoura N.
SourcePlos One, 2017, 12 (4), p. e0175232 [14 p.]. p. e0175232 [14 p.] ISSN 1932-6203
RésuméDate palm (Phoenix dactyliferaL.) is the mainstay of oasis agriculture in the Saharan region. It is cultivated in a large part of the Mediterranean coastal area of the Sahara and in most isolated oases in the Algerian desert. We sampled 10 oases in Algeria to understand the structure of date palm diversity from the coastal area to a very isolated desert location. We used 18 microsatellite markers and a chloroplast minisatellite to characterize 414 individual palm trees corresponding to 114 named varieties. We found a significant negative inbreeding coefficient, suggesting active farmer selection for heterozygous individuals. Three distinct genetic clusters were identified, a ubiquitous set of varieties found across the different oases, and two clusters, one of which was specific to the northern area, and the other to the drier southern area of the Algerian Sahara. The ubiquitous cluster presented very striking chloroplast diversity, signing the frequency of haplotypes found in Saudi Arabia, the most eastern part of the date palm range. Exchanges of Middle Eastern and Algerian date palms are known to have occurred and could have led to the introduction of this particular chlorotype. However, Algerian nuclear diversity was not of eastern origin. Our study strongly suggests that the peculiar chloroplastic diversity of date palm is maintained by farmers and could originate from date palms introduced from the Middle East a long time ago, which since then, hasbeen strongly introgressed. This study illustrates the complex structure of date palm diversity in Algerian oases and the role of farmers in shaping such cryptic diversity.
Plan de classementSciences du monde végétal [076]
Descr. géo.ALGERIE
LocalisationFonds IRD [F B010069992]
Identifiant IRDfdi:010069992
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010069992

Export des données

Disponibilité des documents

Télechargment fichier PDF téléchargeable

Lien sur le Web lien chez l'éditeur

Accès réservé en accès réservé

HAL en libre accès sur HAL


Accès aux documents originaux :

Le FDI est labellisé CollEx

Accès direct

Bureau du chercheur

Site de la documentation

Espace intranet IST (accès réservé)

Suivi des publications IRD (accès réservé)

Mentions légales

Services Horizon

Poser une question

Consulter l'aide en ligne

Déposer une publication (accès réservé)

S'abonner au flux RSS

Voir les tableaux chronologiques et thématiques

Centres de documentation

Bondy

Montpellier (centre IRD)

Montpellier (MSE)

Nouméa

Papeete

Niamey

Ouagadougou

Tunis

La Paz

Quito