1. African Sustainable Agriculture Research Institute (ASARI), University Mohammed VI Polytechnic (UM6P), Laâyoune, Morocco
2. Institut Agronomique et Vétérinaire Hassan II, Rabat, Morocco
3. Institut National de la Recherche Agronomique, Oujda, Morocco
4. Instituto Pirenaico de Ecología (CSIC), Huesca, Spain