Evaluation and yield comparison of new winter rapeseed varieties.
2009
A`li Zadeh, Bahram | Mostafavi Rad, Ma`refat | Mir A`bd Ol-Baqi, Akbar
n order to evaluate and compare of yield and other important agronomic traits in 29 new winter rapessed (Brassica napus L.) cultivars along with Okapi as check, a field experiment was carried out based on randomized complete block design with three replications in research station of Agricultural and Natural Resources Research Center of Markazi Province, Arak, Iran. Each plot was incloding of four rows with 5 meter length and 30 centimeter distance. Important agronomic traits such as days number to initiation and end of flowering, length of flowering, days number to ripening, length of ripening, plant height, second branche number per plant, seed number per pod, pod number per plant were recorded during growth season. After harvesting, 1000 - seed weight, seed oil content (%), seed and oil yield was estimated. The results of varians analysis showed that rapeseed cultivars had significant differences for the most of traits exept 1000 _ seed weight and seed oil content (%) at 1% level prpbability. ES Betty and WR 5252 (Libred) cultivars had the most giain yield (5539 and 5440 kg/ha) respectively in comparison with check.Grain yield of Iranian cultivar namely Zarfam was 5124 kg/ha. In this reaserch, NK Fair and Olphi cultivars had the least grain yield (2846 and 2671 kg/ha) respectively.
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