IITA’s genebank, cowpea diversity on farms, and farmers’ welfare in Nigeria

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dc.creatorKouakou, A.G.
dc.creatorOgundapo, A.T.
dc.creatorSmale, M.
dc.creatorJamora, Nelissa
dc.creatorManda, J.
dc.creatorAbberton, Michael T.
dc.date2022-12
dc.date2022-04-11T09:40:21Z
dc.date2022-04-11T09:40:21Z
dc.date.accessioned2026-06-27T16:07:00Z
dc.descriptionBackground Cowpea or black-eyed pea (Vigna unguiculata L.) is one of the preferred food crops in Nigeria, as expressed in land area and production. The popularity of the crop is in part related to the successful development and adoption of improved cowpea varieties. Although the genebank of the International Institute of Tropical Agriculture (IITA) has contributed to cowpea conservation and improvement efforts by breeding programs internationally and in Nigeria, few studies have attempted to link the genebank to the management of cowpea genetic resources (CGRs) on farms. This study explores the linkage between IITA’s genebank and cowpea variety diversity on farms and other measures of farmers’ welfare in Nigeria. Methods A multistage stratified sampling was used to select the sample households. A cross-sectional household survey was conducted to collect data from 1524 cowpea-producing households. In addition, “Helium”, a multi-platform pedigree visualization tool with phenotype display was used to gather information about improved cowpea breeding lines and their pedigrees. For data analysis, ecological indices of spatial diversity were employed, and a conditional recursive mixed-process model and a multinomial endogenous treatment effect model were developed. Results We found that growing an improved variety with genebank ancestry is not significantly associated with lower spatial diversity among cowpea varieties. While they may introduce new traits through ancestry, improved varieties do not displace other cowpea varieties or landraces. We also found that genebank ancestry is positively and significantly associated with cowpea yield and farmers’ welfare. Conclusions These findings show additional benefits from IITA’s genebank in Nigeria and that adoption of improved varieties with genebank ancestry does not contribute to the erosion of CGRs on smallholder farms in Nigeria. Policymakers and practitioners should consider these findings when analyzing the benefits of conserving crop genetic diversity in genebanks and on farms.
dc.identifierhttps://hdl.handle.net/10568/119301
dc.identifier.urihttp://hdl.handle.net/123456789/122996
dc.languageen
dc.publisherSpringer
dc.rightsOpen Access
dc.sourceKouakou, A.G., Ogundapo, A.T., Smale, M., Jamora, N., Manda, J. & Abberton, M. (2022). IITA’s genebank, cowpea diversity on farms, and farmers’ welfare in Nigeria. CABI Agriculture and Bioscience, 3(1), 1-16.
dc.subjectgene banks
dc.subjectcowpeas
dc.subjectfarmers
dc.subjectwelfare
dc.subjectnigeria
dc.titleIITA’s genebank, cowpea diversity on farms, and farmers’ welfare in Nigeria
dc.typeJournal Article

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Instituto Internacional de Agricultura Tropical (IITA)