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Distribution and virulence of fungal species isolated from yam (Dioscorea spp.) tubers in three agroecological zones of Nigeria

dc.contributor.authorDania, V.O.
dc.contributor.authorFadina, O.O.
dc.contributor.authorAyodele, M.
dc.contributor.authorKumar, P.L.
dc.date.accessioned2019-12-04T11:36:10Z
dc.date.available2019-12-04T11:36:10Z
dc.date.issued2019-07-12
dc.identifier.citationDania, V.O., Fadina, O.O., Ayodele, M. & Kumar, P.L. (2019). Distribution and virulence of fungal species isolated from yam (Dioscorea spp.) tubers in three agroecological zones of Nigeria. International Journal of Pest Management, 1-10.
dc.identifier.issn0967-0874
dc.identifier.urihttps://hdl.handle.net/20.500.12478/6129
dc.description.abstractField surveys were conducted in 2012 and 2013 to evaluate the distribution and virulence of fungal isolates associated with tuber rot disease among yam (Dioscorea spp.) producing agroecological zones (AEZs) of Nigeria. A total of 70 and 66 farmers’ fields were surveyed in 2012 and 2013, respectively among three yam species, Dioscorea rotundata, D. alata and D. cayenensis. Fifteen rotted samples were randomly collected per each yam species in fourteen districts across the humid rainforest (HF), the derived savanna (DS) and the southern Guinea savanna (SGS) agroecologies. Twenty-one fungal species were isolated in the HF, 18 species in the DS and 16 in the SGS. The highest rot severity was in HF agroecology in the D. rotundata which varied from 27.2% to 65.7% in 2012 and from 21.1 to 57.4% in 2013, while the SGS agroecology had the least severity. Lasiodiplodia theobromae was the most virulent pathogen with lesion diameter of 26.8–42.1 mm at 14 days after inoculation. Findings provide baseline information for the formulation of management strategies for yam tuber rot disease in Nigeria.
dc.format.extent1-10
dc.language.isoen
dc.rightsCopyrighted; all rights reserved
dc.subjectLesions
dc.subjectPathogens
dc.subjectField Experiments
dc.subjectYams
dc.subjectNigeria
dc.subjectDioscorea Rotundata
dc.subjectAgroecology
dc.subjectVirulence
dc.titleDistribution and virulence of fungal species isolated from yam (Dioscorea spp.) tubers in three agroecological zones of Nigeria
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpMaize
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationUniversity of Ibadan
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.creator.identifierP. Lava Kumar: 0000-0003-4388-6510
cg.researchthemePLANT PRODUCTION & HEALTH
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectPlant Diseases
cg.iitasubjectPlant Health
cg.iitasubjectPlant Production
cg.iitasubjectYam
cg.journalInternational Journal of Pest Management
cg.howpublishedFormally Published
cg.accessibilitystatusLimited Access
local.dspaceid106400
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1080/09670874.2019.1629041


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