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Contribution to the domestication of the argantree for oil production purposes

Abstract : A survey conducted in 5 sites in the argan tree forest showed that argan oil represents an important part of the users' incomes. Nut-breaking is the most time-consuming and tedious step for the women involved in oil production. In 3 sites, the women were capable of distinguishing between those trees that yield nuts easy to break and trees yielding nuts difficult to break. These trees were named F and D, respectively. In each site, fruits were harvested from trees identified as F or D by the users, or at random. Those fruits were characterized by a set of measurements, including the force needed to break the nuts. Our measurements pointed out that the nuts harvested from F trees require a lower break force and have a thinner shell and a higher almond weight/nut weight ratio than the nuts harvested from D trees. These three parameters are proposed as a first basis for selecting argan trees for oil production purposes. The higher almond/nut ratio in F trees implies a higher oil yield than with D trees, for the same amount of nuts. Vegetative propagation of adult trees by cuttings allows selected phenotypes to be preserved in nurseries in the form of micro-mother trees from which mycorrhizal plants can be produced by vegetative propagation in order to set up orchards geared to the production of argan oil.
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Submitted on : Saturday, May 30, 2020 - 8:22:21 PM
Last modification on : Friday, June 12, 2020 - 10:43:26 AM

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  • HAL Id : hal-02660387, version 1
  • PRODINRA : 31228
  • WOS : 000247122000006

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Rachida Nouaim, Abdelwahad Echairi, Mariam Kaaya, Rémi Chaussod. Contribution to the domestication of the argantree for oil production purposes. Cahiers Agricultures, EDP Sciences, 2007, 16 (3), pp.199-204. ⟨hal-02660387⟩

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