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Gliadins of Bulgarian durum wheat (Triticum durum Desf.) landraces: genetic diversity and geographical distribution



Gliadins of Bulgarian durum wheat (Triticum durum Desf.) landraces: genetic diversity and geographical distribution



Genetic Resources and Crop Evolution 57(4): 587-595



The polymorphism of gliadins was studied in 98 Bulgarian durum wheat (Triticum durum Desf.) landraces and classified according to the existing catalogues of blocks of gliadin components. In total, 31 alleles, including 12 new ones, were revealed for five gliadin-coding loci. Nine allele families, which included several alleles coding similar blocks differed only by minor components, were found. The gliadin loci had a high genetic diversity (H = 0.70), and Gli-A2 (d) was the most polymorphic locus. Significant differences in allele distribution were observed through the Bulgarian region under study. The results made it possible to explain the distribution by historical factors. Presumably, the genetic material flew into the country via two different ways and different durum wheat subgroups contributed to the formation of Bulgarian landraces. The landraces were a result of long-term selection and, probably, had a close association with the history of the human populations of the region.

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Accession: 066229247

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DOI: 10.1007/s10722-009-9497-0


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