Evaluation of performance of introduced yam bean (Pachyrhizus spp.) in three agro-ecological zones of Rwanda
The yam bean (Pachyrizhus spp) was recently introduced as a root crop with high-yield potential, considerable protein and micro-nutrient concentration to investigate its potential for food production in Rwanda. Except for Chuin types (Pachyrizhus tuberosus) which have high storage root dry matter (R...
| Autores principales: | , , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Springer
2017
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/89724 |
| _version_ | 1855525274140016640 |
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| author | Ndirigwe, J. Rubaihayo, P.R. Tukamuhabwe, Phineas Agaba, R. Rukundo, P. Mwanga, Robert O.M. Tumwegamire, Silver Kamarirwa, V. Kayinamura, E. Grüneberg, W.J. |
| author_browse | Agaba, R. Grüneberg, W.J. Kamarirwa, V. Kayinamura, E. Mwanga, Robert O.M. Ndirigwe, J. Rubaihayo, P.R. Rukundo, P. Tukamuhabwe, Phineas Tumwegamire, Silver |
| author_facet | Ndirigwe, J. Rubaihayo, P.R. Tukamuhabwe, Phineas Agaba, R. Rukundo, P. Mwanga, Robert O.M. Tumwegamire, Silver Kamarirwa, V. Kayinamura, E. Grüneberg, W.J. |
| author_sort | Ndirigwe, J. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The yam bean (Pachyrizhus spp) was recently introduced as a root crop with high-yield potential, considerable protein and micro-nutrient concentration to investigate its potential for food production in Rwanda. Except for Chuin types (Pachyrizhus tuberosus) which have high storage root dry matter (RDM) (26 to 36%), most accessions are consumed raw and are reported to have low RDM. The present study aimed to evaluate and identify adapted high yielding yam bean accessions in major agro-ecological zones of Rwanda. Field experiments with 22 accessions were conducted in 2012 at three research sites representing the major agro-ecologies of Rwanda. Strict reproductive pruning was followed to enhance fresh storage root yields. Across locations, ANOVA indicated highly significant differences (p < 0.01) for genotypes (G), locations (L), seasons (S) and G x L effects for storage root yield, vine yield and harvest index and accounted for 21.88%, 43.41%, 1.43% and 13.25% of the treatment sum of squares, respectively. The GGE bi-plot revealed that EC209018 is high yielding but unstable. However, genotypes, AC209034, AC209035 and EC209046, were outstanding in terms of adaptation and relative stability across the 3 locations, suggesting consistent root yields irrespective of location and environmental conditions. The GGE scatter plot showed that all genotypes formed one mega-environment for storage root yield (Karama, Musanze and Rubona) and two mega-environments for biomass yield (Karama and Rubona as one mega-environment and Musanze the second one). This study revealed that Karama is the most suitable environment for evaluation and selection of yam bean for yield components in Rwanda. |
| format | Journal Article |
| id | CGSpace89724 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace897242025-11-11T10:17:11Z Evaluation of performance of introduced yam bean (Pachyrhizus spp.) in three agro-ecological zones of Rwanda Ndirigwe, J. Rubaihayo, P.R. Tukamuhabwe, Phineas Agaba, R. Rukundo, P. Mwanga, Robert O.M. Tumwegamire, Silver Kamarirwa, V. Kayinamura, E. Grüneberg, W.J. yams yam bean genotypes pachyrizhus gxe high storage roots yield harvest index gge bi-plot The yam bean (Pachyrizhus spp) was recently introduced as a root crop with high-yield potential, considerable protein and micro-nutrient concentration to investigate its potential for food production in Rwanda. Except for Chuin types (Pachyrizhus tuberosus) which have high storage root dry matter (RDM) (26 to 36%), most accessions are consumed raw and are reported to have low RDM. The present study aimed to evaluate and identify adapted high yielding yam bean accessions in major agro-ecological zones of Rwanda. Field experiments with 22 accessions were conducted in 2012 at three research sites representing the major agro-ecologies of Rwanda. Strict reproductive pruning was followed to enhance fresh storage root yields. Across locations, ANOVA indicated highly significant differences (p < 0.01) for genotypes (G), locations (L), seasons (S) and G x L effects for storage root yield, vine yield and harvest index and accounted for 21.88%, 43.41%, 1.43% and 13.25% of the treatment sum of squares, respectively. The GGE bi-plot revealed that EC209018 is high yielding but unstable. However, genotypes, AC209034, AC209035 and EC209046, were outstanding in terms of adaptation and relative stability across the 3 locations, suggesting consistent root yields irrespective of location and environmental conditions. The GGE scatter plot showed that all genotypes formed one mega-environment for storage root yield (Karama, Musanze and Rubona) and two mega-environments for biomass yield (Karama and Rubona as one mega-environment and Musanze the second one). This study revealed that Karama is the most suitable environment for evaluation and selection of yam bean for yield components in Rwanda. 2017-09 2017-12-13T10:16:27Z 2017-12-13T10:16:27Z Journal Article https://hdl.handle.net/10568/89724 en Open Access application/pdf Springer Ndirigwe, J., Rubaihayo, P., Tukamuhabwa, P., Agaba, R., Rukundo, P., Mwanga, O.M.R., ... & Wolfgang, J.G. (2017). Evaluation of performance of introduced yam bean (Pachyrhizus spp.) in three agro-ecological zones of Rwanda. Tropical Plant Biology, 10(2-3),1-13. |
| spellingShingle | yams yam bean genotypes pachyrizhus gxe high storage roots yield harvest index gge bi-plot Ndirigwe, J. Rubaihayo, P.R. Tukamuhabwe, Phineas Agaba, R. Rukundo, P. Mwanga, Robert O.M. Tumwegamire, Silver Kamarirwa, V. Kayinamura, E. Grüneberg, W.J. Evaluation of performance of introduced yam bean (Pachyrhizus spp.) in three agro-ecological zones of Rwanda |
| title | Evaluation of performance of introduced yam bean (Pachyrhizus spp.) in three agro-ecological zones of Rwanda |
| title_full | Evaluation of performance of introduced yam bean (Pachyrhizus spp.) in three agro-ecological zones of Rwanda |
| title_fullStr | Evaluation of performance of introduced yam bean (Pachyrhizus spp.) in three agro-ecological zones of Rwanda |
| title_full_unstemmed | Evaluation of performance of introduced yam bean (Pachyrhizus spp.) in three agro-ecological zones of Rwanda |
| title_short | Evaluation of performance of introduced yam bean (Pachyrhizus spp.) in three agro-ecological zones of Rwanda |
| title_sort | evaluation of performance of introduced yam bean pachyrhizus spp in three agro ecological zones of rwanda |
| topic | yams yam bean genotypes pachyrizhus gxe high storage roots yield harvest index gge bi-plot |
| url | https://hdl.handle.net/10568/89724 |
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