Evaluation of Yield Stability and Adaptability of Vetch Varieties (Vicia Ervilia) in Dryland Conditions

In order to study of adaptability and yield stability of improved vetch lines (V.ervilia) this experiment was carried out as RCBD with 7 international vetch lines along with two local checks (Maragheh local Ardbil local) in two dry land (Maragheh Ardbil) stations for two years at each location. The results showed that: for Biomass yield there was not significant difference between lines but interaction of year and location and variety were significant. The highest yield was from Ardabil local check (2090kg/ha) and line No. 9 (Maragheh local check) and No. 7 had 1934 and 1824 kg/ha respectively. Environmental CV analysis showed that lines No. 1, 2 and 7 had the least interlocation variation (environmental CV) among lines. The final results showed that lines No. 8, 9, 7 had the highest yield and since line No 7 had early maturity along with high stability, therefore it can be recommended for cold dryland regions.