1. Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Sofia, Bulgaria
2. Department of Biology, Faculty of Arts and Science, Osmaniye Korkut Ata University, Osmaniye, Turkey
3. Department of Horticulture, Faculty of Agriculture, Cukurova University, Adana, Turkey
4. Faculty of Biology, Plovdiv University “Paisii Hilendarski”, Plovdiv, Bulgaria