1) Variability of Sweet Potato (Ipomea Batata L.)  Varieties for Their Yield and Yield Components in South and South East Areas of Tigray Region, Ethiopia. Author’s Details: (1)Birhanu Amare , (2)Fetien Abay , (3)Yemane Tsehaye-(1)Alamata Agricultural Research Center, P.O.Box: 56, Alamata, Tigray, Ethiopia.(2)(3)Mekelle University, P.O.Box: 231 Mekelle, Tigray, Ethiopia. Abstract Seven sweet potato varieties were tested …