Genetic relationships among local potato cultivars from Spain using SSR markers |
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Authors: | Email author" target="_blank">Jose?Ignacio?Ruiz?de?GalarretaEmail author Leire?Barandalla Domingo?José?Rios Raquel?Lopez Enrique?Ritter |
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Institution: | 1.NEIKER-Tecnalia. Instituto Vasco de Investigación y Desarrollo Agrario,Vitoria,Spain;2.Centro de Conservación de la Biodiversidad Agrícola de Tenerife,Cabildo Insular de Tenerife,Tacoronte (Tenerife),Spain |
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Abstract: | Microsatellite markers (SSR) were used to fingerprint a total of 105 local potato cultivars from Spain. A set of 41 cultivars
from Tenerife Island, 19 from the island of La Palma, and 45 local varieties from peninsular Spain were analysed. Some of
these varieties represent relicts of the early introductions originating from South America and have been characterised previously
morphologically and ecophysiologically. We observed within our materials a total of 76 SSR alleles. Only seven of them were
present in all varieties. Several accession and group specific alleles were detected. Similarity coefficients were computed
from the molecular data and cluster analyses were performed. The obtained dendrogram was generally in good agreement with
previous classifications of the accessions as Solanum tuberosum L. subsp. andigena (Juz. et Bukasov) Hawkes S. tuberosum L. subsp. tuberosum and S. chaucha Juz. et Bukasov genotypes. Also cultivar groups with identical or related common names showed the same SSR patterns or clustered
closely together. In addition we performed Principal Coordinate Analysis with the set of genotypes. Results of both analysis
methods were generally in good agreement, but also some smaller differences were detected in the associations of groups and
genotypes. According to the molecular patterns for some accessions misleading or confounded names were evident, and in some
cases the molecular patterns showed also discrepancies with previous species assignments, suggesting the need for a more detailed
comparative study of these accessions. |
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