GENETIC DIVERSITY OF THE BULGARIAN PHASEOLUS VULGARIS L. GERMPLASM COLLECTION THROUGH PHASEOLIN MARKER

Evaluation of the Bulgarian Phaseolus × vulgaris L. germplasm collection has been undertaken in order to constitute a representative ‘core collection’ on the basis of discriminating characters.
Investigation on present genetic diversity in local common bean accessions and breeding forms has been carried out through 1D-SDS-PAGE and a densitometry of bands from proteinograms.
Four phaseolin types: ‘T’, ‘Ca’, ‘C’ and ‘S’ have been distinguished indicating a low level of genetic diversity in comparison with the level occurring in centres of origin and primary diversity of this neotropical species.
As a highly conservative marker, the phaseolin type is helpful to characterize the primary gene pool of the accessions grown and maintained in a region of secondary diversity, as Bulgaria became more than three centuries ago.
In Bulgaria, representatives of the two Andean and Mesoamerican common bean gene pools have been identified, with a predominance of the Andean over the Mesoamerican one.
Most local accessions share the ‘T’ phaseolin type, while the ‘Ca’ type predominates among the breeding lines and cultivars.

IV Balkan Symposium on Vegetables and Potatoes

N.B. Tomlekova, I.B. Poryazov, L.I. Krasteva, J.-P. Baudoin

Phaseolus × vulgaris, genetic diversity, core collection, phaseolin type, seed coat colour

https://doi.org/10.17660/ActaHortic.2009.830.29