This study was carried out to evaluate adaptation of grasspea lines under semi arid (Tokat, Turkey) ecological conditions during 2007/08 and 2008/09 years. Five grasspea lines were obtained from ICARDA (38, 439, 452, 455 and 463). Thirteen grasspea lines were obtained from Uludag University, Turkey. Five grasspea varieties were obtained from Romania. One grasspea cultivar was obtained from Central Research Institute of Field Crops, and two local populations were obtained from Adiyaman and Elazig. The research was designed according to a randomized block design with four replicates. Green forage yield, seed yield, 1000-seed weight and crude protein content in dry matter were determined. The data were analyzed with MSTAT statistical program. Green forage yield (2129.5 – 16738.0 kg/ha), seed yield (450.5 – 1132.2 kg/ha), 1000-seed weight (95.9 – 221.2 g) and crude protein content in dry matter (15.23 - 23.42%) were ranged based on two years production.