Assessment of genetic erosion in Slovenian common bean germplasm

摘要

Common bean cultivation has a long history in Slovenia. Numerous landraces have been developed that are still used in bean production. More than 1000 accessions that differ in various morphological, biochemical and molecular characteristics are storedin the germplasm collection at the Agricultural Institute of Slovenia, including a set of 55 accessions more than 50 years old. Genetic similarity between newly acquired and the old set of 'Cesnjevec' landrace accessions collected in the 1950ies was analyzed with RAPD and microsatellite markers in order to determine the level of genetic erosion. The results of molecular analysis did not reveal any complete allele loss in the new Slovenian 'Cesnjevec' landrace collection, but introgression of new alleles and allele frequency shifts were detected.