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dc.contributor.authorDarkwa, K.
dc.contributor.authorAmbachew, D.
dc.contributor.authorMohammed, H.
dc.contributor.authorAsfaw, A.
dc.contributor.authorBlair, M.W.
dc.date.accessioned2016-09-20T12:35:41Z
dc.date.available2016-09-20T12:35:41Z
dc.date.issued2016-07-22
dc.identifier.citationDarkwa, K., Ambachew, D., Mohammed, H., Asfaw, A. & Blair, M.W. (2016). Evaluation of common bean (Phaseolus vulgaris L.) genotypes for drought stress adaptation in Ethiopia. The Crop Journal, 1-10en_US
dc.identifier.issn2214-5141
dc.identifier.urihttp://hdl.handle.net/10568/77099
dc.descriptionOpen Access Journal, Article In Pressen_US
dc.description.abstractDrought stress linked with climate change is one of the major constraints faced by common bean farmers in Africa and elsewhere. Mitigating this constraint requires the selection of resilient varieties that withstand drought threats to common bean production. This study assessed the drought response of 64 small red-seeded genotypes of common bean grown in a lattice design replicated twice under contrasting moisture regimes, terminal drought stress and non-stress, in Ethiopia during the dry season from November 2014 to March 2015. Multiple plant traits associated with drought were assessed for their contribution to drought adaptation of the genotypes. Drought stress determined by a drought intensity index was moderate (0.3). All the assessed traits showed significantly different genotypic responses under drought stress and non-stress conditions. Eleven genotypes significantly (P ≤ 0.05) outperformed the drought check cultivar under both drought stress and non-stress conditions in seed yielding potential. Seed yield showed positive and significant correlations with chlorophyll meter reading, vertical root pulling resistance force, number of pods per plant, and seeds per pod under both soil moisture regimes, indicating their potential use in selection of genotypes yielding well under drought stress and non-stress conditions. Clustering analysis using Mahalanobis distance grouped the genotypes into four groups showing high and significant inter-cluster distance, suggesting that hybridization between drought-adapted parents from the groups will provide the maximum genetic recombination for drought tolerance in subsequent generations.en_US
dc.description.sponsorshipGeneration Challenge Programen_US
dc.description.sponsorshipBill & Melinda Gates Foundationen_US
dc.description.sponsorshipEvans Allen Funden_US
dc.format.extent1-10en_US
dc.language.isoenen_US
dc.sourceThe Crop Journalen_US
dc.subjectGENOTYPESen_US
dc.subjectBEANen_US
dc.subjectETHIOPIAen_US
dc.subjectGRAIN LEGUMESen_US
dc.subjectPHASEOLUS VULGARISen_US
dc.titleEvaluation of common bean (Phaseolus vulgaris L.) genotypes for drought stress adaptation in Ethiopiaen_US
dc.description.versionPeer Reviewen_US
dc.typeJournal Articleen_US
cg.authorship.typesCGIAR and developing country instituteen_US
cg.subject.iitaGENETIC IMPROVEMENTen_US
cg.subject.iitaGRAIN LEGUMESen_US
cg.identifier.statusOpen Accessen_US
cg.contributor.affiliationInternational Potato Centeren_US
cg.contributor.affiliationHawassa Universityen_US
cg.contributor.affiliationSouthern Agricultural Research Institute, Ethiopiaen_US
cg.contributor.affiliationTennessee State Universityen_US
cg.contributor.affiliationInternational Institute of Tropical Agricultureen_US
cg.targetaudienceSCIENTISTSen_US
cg.fulltextstatusFormally Publisheden_US
cg.identifier.doihttps://dx.doi.org/10.1016/j.cj.2016.06.007en_US
cg.coverage.regionAFRICAen_US
cg.coverage.regionEAST AFRICAen_US
cg.coverage.countryETHIOPIAen_US
cg.contributor.crpGenebanksen_US
cg.contributor.crpGrain Legumesen_US


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