Two field experiments were carried out at Sakha Agric. Res. Station, during two seasons of 2010 and 2011 to investigate the performance of fifteen sunflower genotypes namely some new open pollinated genotypes (120, 125, 230, 235, 240, 245, 350, 355, 460, 465, 770, 775, 880 and two commercial varieties Giza 102 and Sakha 53.                 Giza 102 variety gave the lowest values for number of days from planting to 50% budding, flowering and maturity (39.5, 47.75 and 86.00 days, respectively, whereas genotypes 775 gave the highest values (47.88, 56.75 and 93.13 days, respectively).                 Results of the combined analysis of the two seasons showed that significant differences were observed among the sunflower genotypes in all characters of yield and its components, physical properties, germination and seedling vigor. Genotype 245 gave the highest value for plant height (186.25 cm), whereas, Sakha 53 variety gave the highest values for head diameter and stem diameter (18.13 cm and 2.63 cm, respectively). Sakha 53 variety ranked first and achieved the highest estimates for seed yield/plant (45.38 gm), seed yield/fed. (1483.75 kg) and oil yield/fed. (590.51 kg). Physical properties of the fifteen tested sunflower seed genotypes varied from one genotype to the other. Genotype 120 gave the highest values for seed index and relative density (g/cm³), while genotype 235 and genotype 240 had the highest volume values of 100 seeds (cm³).                 Sakha 53 variety exceeded all other genotypes in seed oil content 39.81% and protein content ranged from 24.30% genotype 350 to 29.59% in genotype 240.                 Giza 102 variety gave the highest values of germination percentage and shoot length, while Sakha 53 variety had the highest value of radical length. Dry weight of seedling ranged from 55.1 mg (genotype 770) to 73.8 mg (genotype 235). SDS-PAGE showed changes in the protein banding pattern and hand density to different between 15 genotypes of sunflower under study.                 Positive and highly significant correlation coefficient were found between seed yield/fed. and all related traits, stem diameter, head diameter, seed index, seed yield/plant, oil content and oil yield/fed.