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dc.contributor.authorOyesigye, E.
dc.contributor.authorZacarias, A.
dc.contributor.authorMondjana, A.
dc.contributor.authorMagaia, H.
dc.contributor.authorFerguson, M.
dc.date.accessioned2019-12-04T11:33:10Z
dc.date.available2019-12-04T11:33:10Z
dc.date.issued2018-12
dc.identifier.citationOyesigye, E., Zacarias, A., Mondjana, A., Magaia, H. & Ferguson, M. (2018). Single nucleotide polymorphism (SNP) diversity of cassava genotypes in relation to cassava brown streak disease in Mozambique. Plant Genetic Resources: Characterization and Utilization, 16(6), 533-543.
dc.identifier.issn1479-2621
dc.identifier.urihttps://hdl.handle.net/20.500.12478/5536
dc.descriptionPublished online: 14 Jun 2018
dc.description.abstractCassava brown streak disease (CBSD) remains a major threat to cassava production in Mozambique. Breeding for CBSD resistant varieties that are also preferred by farmers is an integral part of managing the disease. The main objective of the study was to determine the genetic relationship between farmer-preferred varieties from Mozambique with those from Tanzania whose resistance to CBSD is known and some of which are being used as parents in quantitative trait loci (QTL) detection studies. To achieve this, 103 genotypes collected from farmers’ field in three provinces of Mozambique were genotyped together with five varieties from Tanzania whose CBSD response is well known. Thirty-five single nucleotide polymorphism (SNP) markers with a high minor allele frequency in East African landraces were used. Results indicated that seven Mozambican genotypes were genetically similar to either one of the four Tanzanian CBSD resistant genotypes while Xino Nn'gole was genetically identical to Namikonga a CBSD resistant variety, based on the SNPs used here. Little genetic differentiation was observed in cassava between provinces, with the majority of genetic variation distributed within individual genotypes (98%) rather than among provinces (2%). Both observed (Ho) and expected (He) heterozygosity in three provinces were generally high (Ho = 0.496) and (He = 0.455). There is a high likelihood that the eight genotypes similar/identical to those from Tanzania may share the same QTL associated with CBSD resistance thus should be further evaluated for agronomic traits as well as response to CBSD.
dc.description.sponsorshipInstituto de Investigação Agrária de Moçambique
dc.format.extent533-543
dc.language.isoen
dc.rightsCC-BY-4.0
dc.subjectCassava
dc.subjectFood Production
dc.subjectGenetics
dc.subjectManihot Esculenta
dc.subjectQuantitative Trait Loci
dc.subjectMozambique
dc.titleSingle nucleotide polymorphism (SNP) diversity of cassava genotypes in relation to cassava brown streak disease in Mozambique
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationUniversidade Eduardo Mondlane
cg.contributor.affiliationInstituto de Investigação Agrária de Moçambique
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionSouthern Africa
cg.coverage.countryMozambique
cg.creator.identifierMorag Ferguson: 0000-0002-7763-5173
cg.researchthemeBIOTECH & PLANT BREEDING
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectCassava
cg.iitasubjectFood Science
cg.iitasubjectFood Systems
cg.journalPlant Genetic Resources: Characterization and Utilization
cg.howpublishedFormally Published
cg.accessibilitystatusLimited Access
local.dspaceid104235
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1017/s1479262118000126


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