Primary Selection and Secondary Diversification: Two Key Processes in the History of Olive Domestication

Knowledge on the crop domestication process is important from a cultural and agricultural standpoint since it can shed light on the origin and history of human civilizations as well as the management of genetic resources, while offering guidance for modern breeding. The olive tree (Olea europaea ssp...

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Main Authors: Bouchaib Khadari, Ahmed El Bakkali
Format: Article
Language:English
Published: Wiley 2018-01-01
Series:International Journal of Agronomy
Online Access:http://dx.doi.org/10.1155/2018/5607903
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author Bouchaib Khadari
Ahmed El Bakkali
author_facet Bouchaib Khadari
Ahmed El Bakkali
author_sort Bouchaib Khadari
collection DOAJ
description Knowledge on the crop domestication process is important from a cultural and agricultural standpoint since it can shed light on the origin and history of human civilizations as well as the management of genetic resources, while offering guidance for modern breeding. The olive tree (Olea europaea ssp. europaea) is the most iconic of the old crop species of the Mediterranean Basin (MB). Primary domestication from wild olive probably occurred around 6000 BP in the Middle East. However, the question remains as to whether cultivated olive derived from a single domestication event in the Levant, followed by secondary diversification, or whether it was the result of independent domestication events. Here, we analyzed a comprehensive sample collected from 35 wild populations (722 individuals) and 410 cultivars from across the MB using nuclear and plastid DNA markers. Our genetic investigations argue in favor of a single primary domestication event in the eastern MB, followed by diffusion of the first domesticated olive and diversification in the central and western MB as key processes in the olive tree history.
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spelling doaj-art-d81e079b84714951bddff2f07f14a5cc2025-08-20T02:20:58ZengWileyInternational Journal of Agronomy1687-81591687-81672018-01-01201810.1155/2018/56079035607903Primary Selection and Secondary Diversification: Two Key Processes in the History of Olive DomesticationBouchaib Khadari0Ahmed El Bakkali1AGAP, University Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, FranceINRA, UR Amélioration des Plantes et Conservation des Ressources Phytogénétiques, Meknès, MoroccoKnowledge on the crop domestication process is important from a cultural and agricultural standpoint since it can shed light on the origin and history of human civilizations as well as the management of genetic resources, while offering guidance for modern breeding. The olive tree (Olea europaea ssp. europaea) is the most iconic of the old crop species of the Mediterranean Basin (MB). Primary domestication from wild olive probably occurred around 6000 BP in the Middle East. However, the question remains as to whether cultivated olive derived from a single domestication event in the Levant, followed by secondary diversification, or whether it was the result of independent domestication events. Here, we analyzed a comprehensive sample collected from 35 wild populations (722 individuals) and 410 cultivars from across the MB using nuclear and plastid DNA markers. Our genetic investigations argue in favor of a single primary domestication event in the eastern MB, followed by diffusion of the first domesticated olive and diversification in the central and western MB as key processes in the olive tree history.http://dx.doi.org/10.1155/2018/5607903
spellingShingle Bouchaib Khadari
Ahmed El Bakkali
Primary Selection and Secondary Diversification: Two Key Processes in the History of Olive Domestication
International Journal of Agronomy
title Primary Selection and Secondary Diversification: Two Key Processes in the History of Olive Domestication
title_full Primary Selection and Secondary Diversification: Two Key Processes in the History of Olive Domestication
title_fullStr Primary Selection and Secondary Diversification: Two Key Processes in the History of Olive Domestication
title_full_unstemmed Primary Selection and Secondary Diversification: Two Key Processes in the History of Olive Domestication
title_short Primary Selection and Secondary Diversification: Two Key Processes in the History of Olive Domestication
title_sort primary selection and secondary diversification two key processes in the history of olive domestication
url http://dx.doi.org/10.1155/2018/5607903
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