Genetic linkage between endosperm storage protein genes on each of the short arms of chromosomes 1A and 1B in wheat.

The storage proteins of the endosperm of wheat grain which are known to be controlled by genes on the short arms of the homoeologous group 1 chromosomes are (1) the ω-gliadins, (2) most of the γ-gliadins, (3) a few β-gliadins and (4) the major lowmolecular-weight subunits of glutenin. Several crosses were made between varieties or genetic lines which had contrasting allelic variants for some of these proteins and which were coded by genes on chromosomes 1A or 1B. The progeny were analysed by one or more of several electrophoretic procedures. The results of all the analyses are consistent with the hypothesis that chromosomes 1A and 1B each contain just one, complex locus, named Gli-A 1 and Gli-B 1 respectively, which contain the genes for the ω-, γ- and β-gliadins and the low-molecular-weight subunits of glutenin.