Investigation of rapeseed cultivars reaction to spring and autumn plantings in mild cold area.
2008
Shirani Rad, Amir Hossein
In order to investigation of rapeseed cultivars reaction to spring and autumn plantings in mild cold area , an experimental was carried out in a split plot design based on RCBD with four replications for two years. Treatments were included: 1- Planting season in two levels as main plots such as common planting date (autumn planting) and spring planting. 2- Varieties as sub plots including of RGS 003, Amica, Sarigol, Option 500, Hyola 401, Hyola 42, Hyola 60, Hyola 420, Hyola 330, Hyola 308, Kimberly, RGS 006, 19-H, Syn-3, PR-401/16, pp-401/15E, pp 308/8, pp 308/3, ORS 3150- 3006, ORS 3150-3008, RG 4403, RG 405/03, RGAS 0324, RG 405/02 The results showed that simple effects of planting season and variety and also interaction effect on seed yield and oil yield were significant at 1% level probability. Hyola 401 in common planting date (4688 kg/ha) had the highest seed yield and Hayola 330 in this planting date (2165 kg/ha) had the highest oil yield. But RG405/03 in spring planting (2066 and 713/6 kg/ha) had the highest seed yield and oil yield respectively. Simple correlation among characters showed that seed yield with 1000 seed weight had significant correlation at 5% level probability and with oil yield , biologic yield and harvest index had significant correlation at 1% level probability.
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