Re-defining the yam (Dioscorea spp.) core collection using morphological traits
Development of core collection representing the diversity in the entire germplasm creates a better access and enhanced utilization of the main collection thus allowing rapid evaluation in crop improvement programs. Core collections are dynamic in nature and needs revisiting when additional germplasm...
| Autores principales: | , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Cambridge University Press
2017
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/81242 |
| _version_ | 1855514989302906880 |
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| author | Girma Tessema, G. Bhattacharjee, Ranjana López Montes, Antonio José Gueye, B. Ofodile, S. Franco, J. Abberton, Michael T. |
| author_browse | Abberton, Michael T. Bhattacharjee, Ranjana Franco, J. Girma Tessema, G. Gueye, B. López Montes, Antonio José Ofodile, S. |
| author_facet | Girma Tessema, G. Bhattacharjee, Ranjana López Montes, Antonio José Gueye, B. Ofodile, S. Franco, J. Abberton, Michael T. |
| author_sort | Girma Tessema, G. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Development of core collection representing the diversity in the entire germplasm creates a better access and enhanced utilization of the main collection thus allowing rapid evaluation in crop improvement programs. Core collections are dynamic in nature and needs revisiting when additional germplasm and information becomes available. In the current study, an attempt was made to re-define the previously developed yam (Dioscorea spp) core collection using 56 morphological traits. Information on additional acquired germplasm and presence of duplicates or mislabelled accessions in the entire collection was also used. The re-defined core collection consisted of 843 accessions and represented about 20% of the entire collection. It included six Dioscorea species, of which accessions of Dioscorea rotundata are in the majority (73.54%) followed by Dioscorea alata (21.35%), Dioscorea bulbifera (1.66%), Dioscorea cayenensis (1.42%), Dioscorea dumetorum (1.42%) and Dioscorea esculenta (0.59%). The Shannon weaver diversity index and principal component analysis revealed the maximum diversity captured in the core from the base collection. This re-defined core collection is more valuable than the original core since it represents true-to-type accessions ensuring reliability for enhanced utilization of germplasm in yam improvement programs. |
| format | Journal Article |
| id | CGSpace81242 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | Cambridge University Press |
| publisherStr | Cambridge University Press |
| record_format | dspace |
| spelling | CGSpace812422024-11-15T08:52:05Z Re-defining the yam (Dioscorea spp.) core collection using morphological traits Girma Tessema, G. Bhattacharjee, Ranjana López Montes, Antonio José Gueye, B. Ofodile, S. Franco, J. Abberton, Michael T. dioscorea yams core collection morphological traits phenotypic diversity genetics Development of core collection representing the diversity in the entire germplasm creates a better access and enhanced utilization of the main collection thus allowing rapid evaluation in crop improvement programs. Core collections are dynamic in nature and needs revisiting when additional germplasm and information becomes available. In the current study, an attempt was made to re-define the previously developed yam (Dioscorea spp) core collection using 56 morphological traits. Information on additional acquired germplasm and presence of duplicates or mislabelled accessions in the entire collection was also used. The re-defined core collection consisted of 843 accessions and represented about 20% of the entire collection. It included six Dioscorea species, of which accessions of Dioscorea rotundata are in the majority (73.54%) followed by Dioscorea alata (21.35%), Dioscorea bulbifera (1.66%), Dioscorea cayenensis (1.42%), Dioscorea dumetorum (1.42%) and Dioscorea esculenta (0.59%). The Shannon weaver diversity index and principal component analysis revealed the maximum diversity captured in the core from the base collection. This re-defined core collection is more valuable than the original core since it represents true-to-type accessions ensuring reliability for enhanced utilization of germplasm in yam improvement programs. 2017-05-03 2017-05-30T09:18:08Z 2017-05-30T09:18:08Z Journal Article https://hdl.handle.net/10568/81242 en Limited Access Cambridge University Press Girma Tessema, G., Bhattacharjee, R., Lopez-Montes, A., Gueye, B., Ofodile, S., Franco, J. & Abberton, M. (2017). Re-defining the yam (Dioscorea spp.) core collection using morphological traits. Plant Genetic Resources-Characterization and Utilization, 1-8. |
| spellingShingle | dioscorea yams core collection morphological traits phenotypic diversity genetics Girma Tessema, G. Bhattacharjee, Ranjana López Montes, Antonio José Gueye, B. Ofodile, S. Franco, J. Abberton, Michael T. Re-defining the yam (Dioscorea spp.) core collection using morphological traits |
| title | Re-defining the yam (Dioscorea spp.) core collection using morphological traits |
| title_full | Re-defining the yam (Dioscorea spp.) core collection using morphological traits |
| title_fullStr | Re-defining the yam (Dioscorea spp.) core collection using morphological traits |
| title_full_unstemmed | Re-defining the yam (Dioscorea spp.) core collection using morphological traits |
| title_short | Re-defining the yam (Dioscorea spp.) core collection using morphological traits |
| title_sort | re defining the yam dioscorea spp core collection using morphological traits |
| topic | dioscorea yams core collection morphological traits phenotypic diversity genetics |
| url | https://hdl.handle.net/10568/81242 |
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