Bread wheat is the most important plant species used in human nutrition and most of the daily protein and calorie needs of people are met from this plant. 13 advanced bread wheat lines, 1 candidate for registration and 6 bread wheat varieties have been compared in terms of yield, number of spikes per square meter, 1000 grain weight, hectoliter weight, plant height, protein ratio, zeleny sedimentation value and 3 different (-17, -19 and -21 °C) cold level parameters in this study