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Genetic diversity of cassava landraces and documentation of farmer's knowledge in Lamu, Kenya

dc.contributor.authorMutoni, C.K.
dc.contributor.authorNzuve, F.M.
dc.contributor.authorMiano, D.
dc.contributor.authorKivuva, B.M.
dc.contributor.authorObare, I.J.
dc.contributor.authorShah, T.
dc.contributor.authorFerguson, M.
dc.date.accessioned2024-09-10T09:31:14Z
dc.date.available2024-09-10T09:31:14Z
dc.date.issued2024
dc.identifier.citationMutoni, C.K., Nzuve, F.M., Miano, D.W., Kivuva, B.M., Obare, I.J., Shah, T. & Ferguson, M. (2024). Genetic diversity of cassava landraces and documentation of farmer’s knowledge in Lamu, Kenya. Genetic Resources and Crop Evolution, 71(5), 2189-2201.
dc.identifier.issn0925-9864
dc.identifier.urihttps://hdl.handle.net/20.500.12478/8527
dc.description.abstractTo develop a strategy for improvement of cassava (Manihot esculenta Crantz) productivity for climate change preparedness in Lamu County, Kenya, it was important to understand which cultivars farmers are growing. Landraces should be collected and conserved prior to replacement by improved cultivars to avoid erosion of genetic resources and associated farmer knowledge. In this study, 58 samples of landraces were collected from five administrative wards in Lamu County. These were SNP genotyped using low-density Diversity Array Technologies (DArT) DaRTSeq™ together with a reference set of 48 breeding lines, eight coastal and 45 inland landraces to aid identification of the collected samples. Genotyping results defined nine clades of duplicates and six unique clones. The most representative clone was selected from each clade of duplicates and combined with the unique clones giving a set of 15 different genotypes. None of the landraces or improved cultivars used in the reference panel were found in the genotyped collection. Discriminant Analysis of Principal Components revealed four clusters; Lamu germplasm, breeding lines, inland landraces and coastal landraces with low levels of differentiation between them. According to Wrights’ F Statistics landraces from Lamu were most closely related to other coastal landraces (Fst = 0.0300), with greater differentiation from breeding lines (Fst = 0.0578) and inland landraces (Fst = 0.0632). Expected heterozygosity was highest for the breeding lines (0.275) and lowest for Lamu landraces (0.240), indicating a narrow genetic base. The results provide valuable information on genetic diversity and identify germplasm for conservation and future use.
dc.description.sponsorshipWorld Bank
dc.format.extent2189-2201
dc.language.isoen
dc.subjectGenetic Diversity
dc.subjectCassava
dc.subjectKnowledge Management
dc.subjectLandraces
dc.subjectKenya
dc.titleGenetic diversity of cassava landraces and documentation of farmer's knowledge in Lamu, Kenya
dc.typeJournal Article
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationUniversity of Nairobi
cg.contributor.affiliationKenya Agricultural and Livestock Research Organization
cg.contributor.affiliationKenya Plant Health Inspectorate Services
cg.coverage.regionAfrica
cg.coverage.regionEast Africa
cg.coverage.countryKenya
cg.coverage.hubEastern Africa Hub
cg.researchthemeBiometrics
cg.identifier.bibtexciteidMUTONI:2023
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAgronomy
cg.iitasubjectCassava
cg.iitasubjectFood Security
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Production
cg.journalGenetic Resources and Crop Evolution
cg.accessibilitystatusLimited Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCopyrighted; all rights reserved
cg.targetaudienceScientists
cg.identifier.doihttps://doi.org/10.1007/s10722-023-01710-9
cg.iitaauthor.identifierTrushar Shah: 0000-0002-0091-7981
cg.iitaauthor.identifierMorag Ferguson: 0000-0002-7763-5173
cg.futureupdate.descriptionAttach the PDF
cg.futureupdate.requiredYes
cg.futureupdate.duration3 Months
cg.identifier.issue5
cg.identifier.volume71


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