Pattern of genetic diversity of cultivated and non-cultivated mashua, <Emphasis Type="Italic">Tropaeolum tuberosum</Emphasis>, in the Cusco region
of Perú |
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| Authors: | O R Ortega E Duran C Arbizu R Ortega W Roca D Potter C F Quiros |
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| Institution: | (1) Department of Plant Sciences, University of California, Davis, CA 95616, USA;(2) International Potato Center, POB 1558, Lima 12, Peru;(3) Centro Regional de Investigación en Biodiversidad Andina (CRIBA), Universidad Nacional San Antonio Abad del Cusco, Cusco, Peru |
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| Abstract: | This paper analyzes the genetic diversity of mashua cultivars grown in six communities in the Cusco region of Perú, of non-cultivated
forms collected in the same region, and a sample of cultivars from the germplasm collection at the International Potato Center
(CIP). From the DNA fingerprinting generated by SRAP markers, it is clear that mashua is a genetically variable crop with
a range of similarity ranging from 65 to 99%. The widest range of variation was found for the most isolated community, Sayllafaya.
Another important finding was that most of the non-cultivated accessions are likely feral races resulting from escape to cultivation
rather than wild relatives. In general the range of variation of the cultivars from the communities and their feral relatives
are not represented in the cultivars sampled of the collection maintained at the International Potato Center, Perú. |
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| Keywords: | Andean tuber Genetic diversity Mashua Molecular markers SRAP Tropaeolum tuberosum |
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