1. CIHEAM-IAMM, UMR CEE-M, F-34093 Montpellier, France
2. CEE-M, University of Montpellier, CIHEAM-IAMM, CIRAD, INRAE, Institut Agro, F-34090 Montpellier, France
3. Department of Agriculture Crop Production and Rural Environment, University of Thessaly, 38446 Volos, Greece
4. LEREPS, ENSFEA, Université Fédérale Toulouse Midi-Pyrénées, F-31042 Toulouse, France
5. Faculty of Agriculture, Lebanese University, Beirut 99, Lebanon
6. CIHEAM-IAMM, UMR TETIS, F-34093 Montpellier, France
7. CIHEAM-IAMM, UMR ABSys, F-34093 Montpellier, France