Fifteen hybrid-mutant lines and two direct mutant lines were studied in terms to their technological quality in 2000 and 2001 vegetation years. The hybrid-mutant lines were produced using chemical mutagen sodium azide at a concentration of 1mM on F2 seeds. For parent cultivars. promising and well adapted Bulgarian and foreign common winter wheat cultivars were used. https://foldlyers.shop/product-category/central-locking/