The aims of this study for segregating generations of two biparental wheat crosses in F7 generation are: to evaluate the phenotypic correlation between studied traits and compare the observed response to selection under high and low levels of nitrogen fertilization. In evaluation trial, progeny was grown with reduced fertilization at 80 kgN/ha and with optimal fertilization at 180 kgN/ha. Strong positive correlation observed among grain protein content, wet gluten content and Zeleny sedimentation value ranged from 0.71 to 0.76. Averaged over evaluation N levels F7 progenies of the cross V×S produced through HN-selection had 4% higher GPC and 10% higher WGC than F7 progenies produced through LN-selection with a higher response at LN evaluation level. For the cross G×E differences between two selection levels were not significant for all traits. The results indicate that selection conducted at high N level is more efficient than selection conducted at low N level in improving bread making quality.