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dc.contributor.authorTuisima Coral, Lady Laura-
dc.contributor.authorGuillén Huachua, Wilfredo Felipe-
dc.identifier.citationTuisima, L. & Guillén, W. (2022). Genetic variability of yam (Dioscorea trifida) genotypes in the Ucayali region, Peru. Agronomía Colombiana, 40(1). doi: 10.15446/agron.colomb.v40n1.99877es_PE
dc.description.abstractThe aim of this research was to assess genetic variability of yam Dioscorea trifida genotypes using morphological descriptors for the germplasm collection conserved in the Agricultural Experiment Station in Ucayali, Peru. Thirty-eight morphological traits were evaluated for 30 D. trifida genotypes over ten years; from the data we estimated the Shannon-Weaver diversity index (H’) and the coefficient of variation and performed principal component analysis and cluster analysis. Qualitative traits with high phenotypic diversity index were: petiole anthocyanin (0.86), internal tuber color (0.86), petiole color (0.81) and stem color (0.80). The quantitative traits with the highest coefficient of variation were: tuber weight per plant (33.01) and tuber yield (32.99). Seventy-six percent of the morphological variability is explained by four principal components, the first component is constituted by the characters tuber width, tuber weight per plant, and tuber yield (29%). Five groups of genotypes were also identified with statistically significant differences, where group B stands out for its higher yield in fewer days to harvest. This research reveals wide morphological diversity in genotypes of D. trifida; these results can be used to strengthen the conservation, management, and genetic improvement initiatives of this important species in the Peruvian Amazon.es_PE
dc.publisherUniversidad Nacional de Colombiaes_PE
dc.relation.ispartofseriesAgronomía Colombianaes_PE
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 United States*
dc.sourceInstituto Nacional de Innovación Agrariaes_PE
dc.source.uriRepositorio Institucional - INIAes_PE
dc.subjectEthnic groupses_PE
dc.subjectMorphological descriptorses_PE
dc.subjectGenetic diversity indexes_PE
dc.subjectTropical tuberes_PE
dc.titleGenetic variability of yam (Dioscorea trifida) genotypes in the Ucayali region, Perues_PE
dc.title.alternativeVariabilidad genética de genotipos de ñame (Dioscorea trifida) en la región Ucayali, Perúes_PE
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