ISHS Acta Horticulturae 830: IV Balkan Symposium on Vegetables and Potatoes
GENETIC DIVERSITY OF THE BULGARIAN PHASEOLUS VULGARIS L. GERMPLASM COLLECTION THROUGH PHASEOLIN MARKER |
| Authors: | N.B. Tomlekova, I.B. Poryazov, L.I. Krasteva, J.-P. Baudoin |
| Keywords: | Phaseolus × vulgaris, genetic diversity, core collection, phaseolin type, seed coat colour |
| DOI: | 10.17660/ActaHortic.2009.830.29 |
| Abstract:
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. | |
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