1. Department of Horticulture and Plant Sciences, College of Agriculture and Veterinary Medicine, Jimma University, Jimma P.O. Box 307, Ethiopia
2. Departments of Plant Biotechnology and Biochemistry, Centre for Plant Molecular Biology & Biotechnology, Tamil Nadu Agricultural University, Coimbatore 641003, India
3. Yam Research Programme, National Root Crops Research Institute, Umudike 440001, Nigeria
4. Department of Crop Production and Land Scape Management, Ebonyi State University, Abakaliki PMB 53, Nigeria
5. Institute of Pharmacology and Toxicology, Julius Maximilian University of Würzburg, Versbacher Str. 9, 97078 Würzburg, Germany