Genetic diversity among native varieties and commercial cultivars of Solanum tuberosum ssp. tuberosum L. present in Chile
Genetic diversity among native varieties and commercial cultivars of Solanum tuberosum ssp. tuberosum L. present in Chile
Authors
Authors
Date
2015-07-23
Datos de publicación:
10.2225/vol16-issue6-fulltext-15
Keywords
Solanum tuberosum - Dendrograma - Germoplasma
Collections
Abstract
Background: The object of this work was to determine the genetic and allelic diversity of Solanum
species present in Chile, assessing allelic distribution among native varieties and commercial cultivars
of Solanum tuberosum ssp. tuberosum L., using microsatellite markers.
Results: A high level of allelic richness was found in the potatoes studied. The seven microsatellite
markers used presented a total of 64 allelic variants among native varieties and commercial cultivars of
Solanum tuberosum ssp. tuberosum. The SSR loci generated an average of 9.16 alleles/locus. The
group with the highest PIC was that of native varieties collected in the Chiloe archipelago. The high
PIC values found indicate that the native varieties from Chiloe have a low level of interrelation,
representing wide genetic diversity.
Conclusions: The markers with the highest number of alleles in native varieties corresponded to loci
STG 0016 and LEMALX. Commercial cultivars do not present the same genetic variability as native
varieties, and the allelic richness of commercial cultivars is lower than that of native varieties of S.
tuberosum ssp. tuberosum. Most of the native varieties were clustered in accordance with their
geographical location, while commercial cultivars, were clustered in accordance with their breeding
programs in Chile and Europe, with the exception of Shepody.