CHROMOSOMAL LOCATION OF SEED STORAGE PROTEIN GENES IN THE GENOME OF DASYPYRUM-VILLOSUM (L) CANDARGY

Genes coding for glutenin-like subunits and for several prolamin subunits with electrophoretic mobilities (lactate-PAGE) corresponding to those of omega- and gamma-gliadins of wheat were located in Dasypyrum villosum chromosome 1V. Genes controlling four gliadin-like subunits with electrophoretic mobilities corresponding to those of alpha- and gamma-gliadins were located on the short arm of chromosome 6V and on the long arm of chromosome 41. N-terminal amino acid sequences of these four components were also determined and homology with alpha-type gliadins was demonstrated. The presence of genes coding for glutenin- and gliadin-like subunits on chromosomes 1V and 6V demonstrates homoeology between the D. villosum chromosomes 1V and 6 V and the chromosomes of homoeologous groups 1 and 6 in wheat. It is likely that the additional locus Gli-V3 on chromosome 4V originated by translocation from the Gli-V2 locus.