The root-knot nematode, Meloidogyne incognita, profoundly affects the production of popular biofortified cassava cultivars

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cg.authorship.typesCGIAR and developing country instituteen
cg.contributor.affiliationFederal University of Agriculture, Nigeriaen
cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.donorBill & Melinda Gates Foundationen
cg.contributor.donorDepartment for International Development, United Kingdomen
cg.coverage.countryNigeria
cg.coverage.iso3166-alpha2NG
cg.coverage.regionAfrica
cg.coverage.regionWestern Africa
cg.creator.identifierPeter Kulakow: 0000-0002-7574-2645
cg.creator.identifierDaniel Coyne: 0000-0002-2030-6328
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1163/15685411-00003331en
cg.identifier.iitathemeBIOTECH & PLANT BREEDING
cg.identifier.iitathemeNATURAL RESOURCE MANAGEMENT
cg.isijournalISI Journalen
cg.issn1388-5545en
cg.issue6en
cg.journalNematologyen
cg.reviewStatusPeer Reviewen
cg.subject.iitaAGRONOMYen
cg.subject.iitaBIOFORTIFICATIONen
cg.subject.iitaCASSAVAen
cg.subject.iitaFOOD SECURITYen
cg.subject.iitaNUTRITIONen
cg.subject.iitaPLANT BREEDINGen
cg.subject.iitaPLANT PRODUCTIONen
cg.volume22en
dc.contributor.authorAkinsanya, A.K.en
dc.contributor.authorAfolami, S.O.en
dc.contributor.authorKulakow, Peter A.en
dc.contributor.authorCoyne, D.en
dc.date.accessioned2020-08-11T14:24:07Zen
dc.date.available2020-08-11T14:24:07Zen
dc.identifier.urihttps://hdl.handle.net/10568/108992
dc.titleThe root-knot nematode, Meloidogyne incognita, profoundly affects the production of popular biofortified cassava cultivarsen
dcterms.abstractDespite being the single largest cassava-producing country, yields in Nigeria remain consistently poor and among the lowest. Regionally, yields are also particularly low across Africa. Pests and pathogens, including plant-parasitic nematodes, play an important role in this current yield deficit. African countries are not only faced with the problem of food security but also that of nutritional deficiency, due to limited micronutrients in the diet. In this study, six biofortified cultivars were evaluated for their response to inoculation with approximately 30 000 root-knot nematode (Meloidogyne incognita) eggs in 30 l pots in Nigeria. All cassava cultivars proved highly susceptible to M. incognita infection after 6 months, with nematode reproduction factor ranging from 7.0 to 44.8. Galling was common on feeder roots and gall index scores were recorded between 4 to 5 (on a scale of 1-5 where 5 ⩽ 100 galls). Meloidogyne incognita infection significantly reduced plant height, stem girth, fresh plant mass, fresh storage root number and storage root weight. Percentage yield loss of between 41.8-88.4% was recorded in M. incognita-infected plants compared with non-infected controls. Although M. incognita reduced storage root weight, it did not necessarily affect the nutritional quality (total carotenoid) or dry weight percentage of the biofortified cassava cultivars. Total carotenoid and dry weight contents of the control cultivar were similar to some of the biofortified cultivars. The high susceptibility of the biofortified cassava cultivars to M. incognita infection indicates that substantial yield losses are likely being experienced by farmers, as this nematode pest is prevalent across sub-Saharan Africa and the tropics.en
dcterms.accessRightsOpen Access
dcterms.audienceScientistsen
dcterms.bibliographicCitationAkinsanya, A.K., Afolami, S.O., Kulakow, P. & Coyne, D. (2020). The root-knot nematode, Meloidogyne incognita, profoundly affects the production of popular biofortified cassava cultivars. Nematology, 22(6), 667–676.en
dcterms.extent667-676en
dcterms.issued2020-07-14
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherBrillen
dcterms.subjectfood securityen
dcterms.subjectcassavaen
dcterms.subjectmanihot esculentaen
dcterms.subjectnematodesen
dcterms.subjectnutritionen
dcterms.subjectyield lossesen
dcterms.subjectsubsaharan africaen
dcterms.subjectroot knot nematodesen
dcterms.subjectcultivarsen
dcterms.subjectvarietiesen
dcterms.typeJournal Article

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