Determing the adaptation of some cowpea (Vigna unguiculata L. Walp) local populations and registered cultivars to the ecological conditions of Siirt

%75 of the cowpea produced in Turkey are produced in Aegean region and %45 of this production are covered from İzmir province and local populations are more used on production. In this study it is aimed to determine the adaptation of some local populations and registered cultivars of cowpea to the ecological conditions of Siirt. 3 local populations and 3 registered cultivars (cv.Karnıkara, cv.Karagöz, cv.Akkız) were used as plant material. The study was carried out in four replications according to the randomized blocks design. In the study, the emergence time, flowering time, pod setting time, plant height, number of branches in per plant, first pod height, pod length, number of pods in per plant, number of seeds in per pod, number of seeds in per plant,1000-seed weight, biological yield, seed yield and harvest index were examined. Accordig to the result of the study, it was determined that the differences between cultivars and local populations were statistically significant in terms of all characteristics, except the emergence time and the number of branches in per plant. As a result of the research; the highest seed yield was obtained from cv. Karagöz with 223.7 kg/da. However,; emergence time 9-10.3 days, flowering time 45.5-56.3 days, pod setting time 56.3-64.3 days, plant height 55-80.7 cm, number of branches per plant 13.4-18.6, first pod height 16.8-26.3 cm, pod length 12.3-18.7 cm, number of pods per plant 16.3-35.8, seed number per pod 7.3-17, seed number per plant 119.2-609.4, 1000-seed weight 93.2-254.3 g, biological yield 352.3-578.5 kg/da, seed yield 76.6-223.7 kg/da and harvest index varied between 21.7% and 38.7%. As a result, it has been determined that the Karagöz cultivar is a promising variety for Siirt ecological conditions in terms of adaptability and high seed yield.. Key Words: Cowpea, Cultivar, Adaptation, Seed Yield, Siirt, Vigna unguiculata