Evaluation of performance of introduced yam bean (Pachyrhizus spp.) in three agro-ecological zones of Rwanda

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cg.authorship.typesCGIAR and developing country instituteen_US
cg.contributor.affiliationMakerere Universityen_US
cg.contributor.affiliationRwanda Agriculture Boarden_US
cg.contributor.affiliationInternational Potato Centeren_US
cg.contributor.affiliationInternational Institute of Tropical Agricultureen_US
cg.contributor.affiliationNational University of Rwandaen_US
cg.contributor.crpRoots, Tubers and Bananasen_US
cg.contributor.donorDirectorate-General for Development Cooperation and Humanitarian Aid, Belgiumen_US
cg.coverage.countryRwandaen_US
cg.coverage.iso3166-alpha2RWen_US
cg.coverage.regionAfricaen_US
cg.coverage.regionMiddle Africaen_US
cg.coverage.regionEastern Africaen_US
cg.howPublishedFormally Publisheden_US
cg.identifier.doihttps://doi.org/10.1007/s12042-017-9188-5en_US
cg.isijournalISI Journalen_US
cg.issn1935-9756en_US
cg.issue2-3en_US
cg.journalTropical Plant Biologyen_US
cg.reviewStatusPeer Reviewen_US
cg.subject.iitaYAMen_US
cg.volume10en_US
dc.contributor.authorNdirigwe, J.en_US
dc.contributor.authorRubaihayo, P.R.en_US
dc.contributor.authorTukamuhabwe, Phineasen_US
dc.contributor.authorAgaba, R.en_US
dc.contributor.authorRukundo, P.en_US
dc.contributor.authorMwanga, Robert O.M.en_US
dc.contributor.authorTumwegamire, Silveren_US
dc.contributor.authorKamarirwa, V.en_US
dc.contributor.authorKayinamura, E.en_US
dc.contributor.authorGrüneberg, W.J.en_US
dc.date.accessioned2017-12-13T10:16:27Zen_US
dc.date.available2017-12-13T10:16:27Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/89724en_US
dc.titleEvaluation of performance of introduced yam bean (Pachyrhizus spp.) in three agro-ecological zones of Rwandaen_US
dcterms.abstractThe 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.en_US
dcterms.accessRightsOpen Accessen_US
dcterms.audienceScientistsen_US
dcterms.available2017-05-25en_US
dcterms.bibliographicCitationNdirigwe, 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.en_US
dcterms.extent97-109en_US
dcterms.issued2017-09en_US
dcterms.languageenen_US
dcterms.licenseCC-BY-4.0en_US
dcterms.publisherSpringeren_US
dcterms.subjectyamsen_US
dcterms.subjectyam beanen_US
dcterms.subjectgenotypesen_US
dcterms.subjectpachyrizhusen_US
dcterms.subjectgxeen_US
dcterms.subjecthigh storage roots yielden_US
dcterms.subjectharvest indexen_US
dcterms.subjectgge bi-ploten_US
dcterms.typeJournal Articleen_US

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