Evaluation of seed storage proteins in an entire commomn wheat collection from Nepal

An entire common wheat collection from Nepal has been electrophoretically evaluated for its variation in storage proteins, gliadins and glutenins. Gliadin analyses showed the existence of an high degree of variation. The consistent presence of seeds lacking the entire cluster of gliadin components controlled by the 1D chromosome has been observed in some samples. These seeds were found to be present, in most cases, in mixtures with seeds having normal gliadin patterns, but some samples were made only by seeds without 1D controlled components. Higher incidence of these seeds was found in samples collected at higher altitudes. Variation in glutenin components was also quite large, expecially at the 1B and 1D complex loci (Glu-1 loci). Also in this case seeds without some glutenin subunits have been detected, but they did not show any apparent relationship with the altitude. New allelic variants at both Glu-B1 and Glu-D1 loci have also been detected.