Genetic diversity assessment of Bulgarian durum wheat (<Emphasis Type="Italic">Triticum durum</Emphasis> Desf.) landraces and modern cultivars using microsatellite markers |
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Authors: | Ganka Ganeva Victor Korzun Svetlana Landjeva Zaprjanka Popova Nikolai K Christov |
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Institution: | 1.Institute of Genetics “Acad. Doncho Kostoff”,Bulgarian Academy of Sciences,Sofia,Bulgaria;2.KWS LOCHOW GMBH,Einbeck,Germany;3.Institute for Plant Genetic Resources “K.Malkov”,Sadovo,Bulgaria;4.AgroBioInstitute,Sofia,Bulgaria |
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Abstract: | The genetic diversity in a Triticum durum Desf. collection, consisting of 102 Bulgarian landraces, nine Bulgarian and 25 introduced cultivars was studied using 14
highly polymorphic microsatellite markers. A total of 100 alleles were identified, with an average of 7.14 alleles per marker.
The gene diversity values (He) of the markers for the total samples ranged from 0.23 (WMS357 and WMS631) to 0.77 (WMS46),
with an average of 0.52. Within the landraces that were collected from 18 sites in Southern Bulgaria showed 2–11 alleles per
locus with an average of 6.07. The microsatellite analysis suggests that the genetic diversity among landraces is lower compared
to the diversity levels for durum wheat in countries close to the main centers of wheat domestication. Breeding activities
have caused significant reduction of the allelic polymorphism, elimination of rare alleles, and increase in the number of
common alleles and the frequency of dominating alleles. |
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