1. SYSTEM, Univ Montpellier Institut Agro, INRAE, CIRAD, IAMM Montpellier France
2. LEPSE, Univ Montpellier, INRAE, Institut Agro Montpellier France
3. Plant Physiology and Crop Improvement Program, AgroBioSciences University Mohammed VI Polytechnic Hay Moulay Rachid Morocco
4. Institut Agro Univ Montpellier Montpellier France
5. Crop and Soil Science Department North Carolina State University Raleigh North Carolina USA
6. US Department of Agriculture ARS Raleigh North Carolina USA