Identification of glutenin and secalin subunits in addition and substitution lines of wheat (Triticum aestivum L.) using biochemical markers

Maria Chrząstek

Abstract

The aim of paper was evaluation of composition of high molecular weight (HMW) and low molecular weight (LMW) glutenin subunits in wheat-rye addition lines cv. Grana - cv. Dańkowskie Złote, substitution line 1B/1R and initial forms, as well as, localization of Sec genes on chromosomes ‘Dańkowskie Złote’ rye. Analysis were performed using SDS-PAGE electrophoresis.The composition of HMW glutenin for all addition lines and ‘Grana’ wheat was: N - 6+8 - 2+12. Composition of LMW glutenin was estimated only for 2R and 6RL addition lines, wheat, and octoploid triticale. In both addition lines the subunits N-6+9-15 were identified, in wheat cv. Grana subunits 1-6+9-15 were present, whereas in octoploid triticale polymorphism was observed (1-6+9-15 or 1-11+13-N). Rye storage proteins (secalins) was found in addition lines: 1R, 2R and substitution line 1B/1R. It can be concluded that genes responsible for secalin biosynthesis in rye cv. Dańkowskie Złote are localized on 1R and 2R chromosomes.