Genetic variability of yam (Dioscorea trifida) genotypes in the Ucayali region, Peru
The 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 o...
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| Format: | Artículo |
| Language: | Inglés |
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Universidad Nacional de Colombia
2022
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| Online Access: | https://hdl.handle.net/20.500.12955/2015 https://doi.org/10.15446/agron.colomb.v40n1.99877 |
| _version_ | 1855490175144034304 |
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| author | Tuisima Coral, Lady Laura Guillén Huachua, Wilfredo Felipe |
| author_browse | Guillén Huachua, Wilfredo Felipe Tuisima Coral, Lady Laura |
| author_facet | Tuisima Coral, Lady Laura Guillén Huachua, Wilfredo Felipe |
| author_sort | Tuisima Coral, Lady Laura |
| collection | Repositorio INIA |
| description | The 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. |
| format | Artículo |
| id | INIA2015 |
| institution | Institucional Nacional de Innovación Agraria |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Universidad Nacional de Colombia |
| publisherStr | Universidad Nacional de Colombia |
| record_format | dspace |
| spelling | INIA20152022-11-30T17:03:34Z Genetic variability of yam (Dioscorea trifida) genotypes in the Ucayali region, Peru Variabilidad genética de genotipos de ñame (Dioscorea trifida) en la región Ucayali, Perú Tuisima Coral, Lady Laura Guillén Huachua, Wilfredo Felipe Ethnic groups Morphological descriptors Sachapapa Genetic diversity index Tropical tuber https://purl.org/pe-repo/ocde/ford#4.04.01 The 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. 2022-11-30T17:03:33Z 2022-11-30T17:03:33Z 2022-04-30 info:eu-repo/semantics/article Tuisima, 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.v40n1.99877 https://hdl.handle.net/20.500.12955/2015 https://doi.org/10.15446/agron.colomb.v40n1.99877 eng Agronomía Colombiana info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivs 3.0 United States http://creativecommons.org/licenses/by-nc-nd/3.0/us/ application/pdf application/pdf Universidad Nacional de Colombia CO Instituto Nacional de Innovación Agraria Repositorio Institucional - INIA |
| spellingShingle | Ethnic groups Morphological descriptors Sachapapa Genetic diversity index Tropical tuber https://purl.org/pe-repo/ocde/ford#4.04.01 Tuisima Coral, Lady Laura Guillén Huachua, Wilfredo Felipe Genetic variability of yam (Dioscorea trifida) genotypes in the Ucayali region, Peru |
| title | Genetic variability of yam (Dioscorea trifida) genotypes in the Ucayali region, Peru |
| title_full | Genetic variability of yam (Dioscorea trifida) genotypes in the Ucayali region, Peru |
| title_fullStr | Genetic variability of yam (Dioscorea trifida) genotypes in the Ucayali region, Peru |
| title_full_unstemmed | Genetic variability of yam (Dioscorea trifida) genotypes in the Ucayali region, Peru |
| title_short | Genetic variability of yam (Dioscorea trifida) genotypes in the Ucayali region, Peru |
| title_sort | genetic variability of yam dioscorea trifida genotypes in the ucayali region peru |
| topic | Ethnic groups Morphological descriptors Sachapapa Genetic diversity index Tropical tuber https://purl.org/pe-repo/ocde/ford#4.04.01 |
| url | https://hdl.handle.net/20.500.12955/2015 https://doi.org/10.15446/agron.colomb.v40n1.99877 |
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