1. Department of Agronomy, Faculty of Agronomy, University of Forestry, Sofia, Bulgaria
2. Department of Plant Production, Faculty of Agriculture, Lebanese University, Beirut, Lebanon
3. Arid Land Agriculture Department, College of Agricultural and Food Sciences, King Faisal University, Al Ahsa, Saudi Arabia
4. Agricultural Biotechnology Department, College of Agricultural and Food Sciences, King Faisal University, Al Ahsa, Saudi Arabia