SEED PROTEIN IN SELECTED KARYOTYPES OF VICIA FABA L.

Electrophoretic analysis of 27 karyotypes of Vicia faba minor has been carried out in order to study the influence of chromosomal changes on seed proteins . The results show that: 1) 28 out of 40 bands are responsible for qualitative differences; 2) chromosomal changes affect the protein profile in a negative direction (reducing the number of bands) but may increase variability by producing new proteins; 3) quantitative differences are evident but not always strong enough to be used for karyotype identification . Cluster analysis of the 40 bands show that: 1 ) each profile is d ifferent from the others; 2) primary karyotype rearrangement are very distinct from each other, from the standard and the other variants; 3) apparently secondary and tertiary rearrangements tend to group according to chromosomal segments involved and to be distinct from the standard .