Comparison of seed and oil yields and some agronomic traits in new cultivars of winter canola (Brassica napus L.)

This experiment was done at Research Farm of Isfahan Agriculture Research Institute in Mahyar region. A complete block design with three replications was used. Cultivars were Adriana, Champlain, Cooper, ES Betty, GK Helena, GK Olivia, GKH 0784, GKH 1605, GKH 2005, GKH 305, GKH 3705, GKH 506, Karun, Licord, Modeno, NK Aviator, NK Karibik, NK Octans, Okapi, Opera, RNX 3621, RPC 2033, Savanna, SLM 046, SW Falstaff, Talaye, Tassilo, Triangle and WRH 268. Cultivars had significant effect on plant height at the 0.05 probability. The number of pods per plant and the number of seeds per pod were significantly influenced by cultivars. Cultivars had no significant effect on 1000-seed weight, biological yield, harvest index, seed yield, oil yield and oil percentage. All differences between cultivars about oil percentage were not significant, and no significant trend was found. The maximum oil yield was related to NK Aviator. The maximum and minimum seed yield was achieved in cultivation of Modena and Tassilo, respectively. Modena obtained the maximum biological yield (19310 kg/ha), but its difference with other cultivars was not significant.