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dc.contributorWolde-Meskel, endalkachewen_US
dc.contributorAdem, Makkaen_US
dc.contributorFikre, Asnakeen_US
dc.contributorAmede, Tilahunen_US
dc.contributorOjiewo, Chrisen_US
dc.creatorDegefu, Tuluen_US
dc.identifier.citationTulu Degefu, endalkachew Wolde-Meskel, Makka Adem, Asnake Fikre, Tilahun Amede, Chris Ojiewo. (7/2/2018). Morphophysiological diversity of rhizobia nodulating pigeon pea (Cajanus cajan L. Millsp. ) growing in Ethiopia. African journal of biotechnology, 17 (6), pp. 167-177.en_US
dc.description.abstractPigeon pea (Cajanus cajan (L.) Millsp.) is an important protein source grown in several tropical and sub-tropical countries, and is considered a multi-purpose plant that is resistant to the conditions where drought and salinity is a common phenomenon. The aim of this study was to evaluate the diversity of rhizobial isolates obtained from root nodules of pigeon pea plants grown in central and southern Ethiopia. A total of 116 nitrogen-fixing rhizobial strains were isolated. The bacterial isolates were characterized by 91 phenotypic traits including cultural characteristics, intrinsic antibiotic and heavy metal resistance, salt, pH and incubation temperature tolerance, and carbon and nitrogen sources utilization ability. Preliminary symbiotic properties of the isolates were also evaluated. The isolates were compared with seven reference strains of rhizobia by application of the unweighted pair group method with arithmetic means (UPGMA) using NTSYSpc Version 2.1 software program. The dendrogram constructed from cluster analysis of 91 phenotypic traits, grouped them into six clusters and eight un-clustered positions at 80% relative similarity. Cluster I contained 83% of the test isolates that were grouped together with the reference strains Bradyrhizobium japonicum (HAMBI 2314T) and Bradyrhizobium elkanii (LMG 6164), suggesting that pigeon pea is commonly nodulated by bradyrhizobia. Results from symbiotic effectiveness test revealed that majority of the isolates were found to be effective. Generally, this investigation demonstrated that rhizobial population nodulating C. cajan on the study area were phenotypically diverse and symbiotically effective. Furthermore, the result indicates the existence of strains in the collection, which can tolerate environmental stresses, thus can be developed into inoculant for pigeon pea inoculation and production in Ethiopia and beyond.en_US
dc.publisherAcademic Journalsen_US
dc.sourceAfrican journal of biotechnology;17,(2018) Pagination 167-177en_US
dc.subjectphenotypic characteristicsen_US
dc.titleMorphophysiological diversity of rhizobia nodulating pigeon pea (Cajanus cajan L. Millsp.) growing in Ethiopiaen_US
dc.typeJournal Articleen_US
cg.creator.idWolde-Meskel, endalkachew: 0000-0001-6433-0162en_US
cg.subject.agrovoccajanus cajanen_US
cg.contributor.centerInternational Crops Research Institute for the Semi-Arid Tropics - ICRISATen_US
cg.contributor.centerInternational Livestock Research Institute - ILRIen_US
cg.contributor.centerEthiopian Institute of Agricultural Research - EIARen_US
cg.contributor.centerAdama Science and Technology University - ASTUen_US
cg.contributor.centerHawassa University, College of Natural and Computational Sciences - HU - CNCSen_US
cg.contributor.crpCGIAR Research Program on Grain Legumes and Dryland Cereals - GLDCen_US
cg.contributor.funderCGIAR System Organization - CGIARen_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.coverage.regionEastern Africaen_US
dc.identifier.statusOpen accessen_US
cg.journalAfrican journal of biotechnologyen_US

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