In order to investigate the effect of nitrogen amounts on remobilization of storage matters to seed of bread and durum wheat genotypes, this experiment as split plots based on randomized complete blocks design at three replications was conducted during cropping year 2010-11. Main plot included five levels of 60, 120, 180 and 240 kilogram per hectare net nitrogen and control treatment (no fertilizer consumption) and sub plot included two bread wheat genotypes, Chamran and S- 85-19 and two Durum genotypes, Dena and Behrang. The results showed that the interaction effect of nitrogen amounts and genotype on remobilization, current photosynthesis and related traits were significant at one percent probability level. The highest average of remobilization (187.30 gram per square meter) and remobilization efficiency (0.22 gram per gram) allocated to Dena cultivar by use of 60 kilogram per hectare. Maximum contribution of remobilization by average of 50 percent belonged to S- 85-19 genotype by use of 120 kilogram per hectare net nitrogen. Maximum amount of current photosynthesis (737.52 gram per square meter) allocated to Chamran cultivar by use of 240 kilogram per hectare net nitrogen and maximum contribution and efficiency of current photosynthesis belonged to Chamran cultivar without using fertilizer by the averages of 1.73 gram per gram and 89.75 percent, respectively. Totally, by increasing nitrogen rates the contribution of current photo synthesis in seed yield increased and the contribution of remobilization reduced. Chamran cultivar allocated maximum rate, efficiency and contribution of current photosynthesis and seed yield among the compared genotypes.