Study of New Safflower Varieties (Carthamus tinctorius L.) Prouduced from Hybridization for some Important Traits

To determinate the most important agronomic traits of new variety of Safflower, an experiment was conducted on 7 Safflower varieties in 2007-2008 growing season at the field of Karaj Research Institute for Seed and Plant Improvement, as a Randomized Complete Block Design with four replications. some important traits such as: head number per plant, seeds per head, plant height, days to flowering, days to maturity, were recorded during the growth period and oil percentage, 1000 seed weight, seed and oil yields were measured after harvesting. The genotypes showed significant difference for head number, 1000 seed weight, oil yield, number of secondary branches, dry weight of biomass, harvest index, oil percentage, dry weight of stem biomass, plant height, seed yield. Data analysis showed the maximum of grain with yield 2655 Kg/ha were achieved in PI variety and the minimum of grain yield with 1460 Kg/ha was achieved in K.W.H.10 respectively.so, the maximum oil percentage with 30/25 were achived in PI variety and minimum oil percentage with 25/5 was achived in LRV51-51 respectively. But maximum of oil yield with 802/03 Kg/ha were achived in PI variety and minimum oil yield with 390/27 Kg/ha was achived in K.W.H.19 respectivly. Also head number, 1000 seed weight, oil yield, number of secondary branches, dry weight of biomass, harvest index correlation with seed yield. Maximum levels of CGR, RGR were related to (PI) variety.