1. Department of Horticultural Sciences, High Agronomic Institute of Chott Mariem, University of Sousse, Sousse, Tunisia
2. Department of Chemistry and Biochemistry, Faculty of Sciences, Center of Chemistry and Biochemistry, University of Lisbon, Campo Grande, Lisbon, Portugal
3. Unit of Organic and Conventional Vegetable Production, High Agronomic Institute of Chott Mariem, University of Sousse, Sousse, Tunisia