1. Faculty of Sciences, Chouaïb Doukkali University, El-Jadida, Morocco;
2. Department of Agronomy, National School of Agriculture, Meknes, Morocco;
3. Department of agronomy, Hassan II Institute of Agronomy and Veterinary Sciences (IAV Hassan II), Rabat, Morocco;
4. Agricultural Training and Research Center, Providence Verte company, Rabat, Morocco