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¹ Orta Karadeniz Geçit Kuşağı Tarımsal Araştırma Enstitüsü Müdürlüğü, Tokat
² Gaziosmanpaşa Üniversitesi Ziraat Fakültesi Tarla Bitkileri Bölümü, Tokat DOI : 10.21566/tarbitderg.359421 - This research was conducted to determine the hybridization success and hybrid seed yields in half diallel hybrid combinations of different poppy varieties. Ofis 96, TMO 1, Hüseyinbey, Çelikoğlu, Ofis NM, Bolvadin 95, TMO T, Ofis 1 and Ofis 2 were used as research materials. Diallel (reciprocal crossing) method was used in the study and 36 crosses were hybridized. The research was carried out under Tokat-Kazova ecological conditions in 2015. Varieties were sown to the plots by following plant densities; 3 m 2 rows, 45 cm rows, in order to make crosses 1 m space was left between the varieties. In the study, the number of hybridized flowers, hybrid capsule formation, hybrid seed yield, hybrid seed yield per capsule were investigated in hybrid combinations. According to the findings, 975 hybrids were made in 36 combinations and 800 hybrid capsules were obtained from the whole. For the combinations, the yield of hybrid seed was ranged between 14.81 and 39.71 g, and the yield of hybrid seed per capsule ranged from 0.54 to 1.64 g. Keywords : Poppy, hybridization, Papaver somniferum L., half diallel