Tracing back the history of pepper (Capsicum annuum L.) in the Iberian Peninsula
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Date
2016
Authors
Silvar, CristinaGarcés Claver, Ana
Mallor Giménez, Cristina
Pomar, Federico
Rocha, Filomena
Barata, Ana M.
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Proceedings PaperArticle
Abstract
Capsicum annuum was the first Capsicum introduced into Europe, likely trough Spain and Portugal,
at the end of the XVth century. Therefore, the Iberian Peninsula constitutes a significant secondary
diversification centre, where part of the original pepper genepool brought back from America might be
preserved in the form of landraces. A previous work suggested that the diversification process of C.
annuum in Spain may occur from an ancient population, still represented by some landraces with ancestral
traits. The current work is focused on clarifying the origins and genetic relationships among the pepper
landraces from the Iberian Peninsula. For that purpose, a larger number of Spanish peppers, a collection
of Portuguese landraces and a panel of C. annuum resources from Mexico, including the wild relative C.
annuum var. glabriusculum were genotyped with the DArTseq technology. Sequencing output consisted
of 27,159 tags, of which 5,007 SNPs were selected for further analyses. Clustering and STRUCTURE
approaches clearly differentiated wild and Mexican peppers from those originating in the Iberian
Peninsula. Various Spanish and Portuguese accessions clustered within the Mexican group, while the
others were primarily organized following a geographical pattern, although their genomic composition was
not extremely different
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Bibliographic citation
XVIth EUCARPIA Capsicum and Eggplant Working Group Meeting. Kecskemét, Hungary, 12 - 14 septiembre 2016
AGROVOC subjects
Capsicum annuumReservas genéticas
España
Portugal