Genome-wide association analysis reveals new insights into the genetic architecture of defensive, agro-morphological and quality-related traits in cassava

cg.authorship.typesCGIAR and developing country institute
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationBoyce Thompson Institute for Plant Research
cg.contributor.affiliationNational Root Crops Research Institute, Nigeria
cg.contributor.affiliationCornell University
cg.contributor.affiliationUnited States Department of Agriculture
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.donorBill & Melinda Gates Foundation
cg.contributor.donorDepartment for International Development, United Kingdom
cg.coverage.countryNigeria
cg.coverage.iso3166-alpha2NG
cg.coverage.regionAfrica
cg.coverage.regionWestern Africa
cg.creator.identifierIsmail Rabbi: 0000-0001-9966-2941
cg.creator.identifierKayondo Siraj Ismail: 0000-0002-3212-5727
cg.creator.identifierPrasad Peteti: 0000-0002-6013-8947
cg.creator.identifierE J Parkes: 0000-0003-4063-1483
cg.creator.identifierJean-Luc Jannink: 0000-0003-4849-628X
cg.creator.identifierChiedozie Egesi: 0000-0002-9063-2727
cg.creator.identifierPeter Kulakow: 0000-0002-7574-2645
cg.howPublishedFormally Published
cg.identifier.doihttps://doi.org/10.1007/s11103-020-01038-3
cg.identifier.iitathemeBIOMETRICS
cg.identifier.iitathemeBIOTECH & PLANT BREEDING
cg.identifier.iitathemePLANT PRODUCTION & HEALTH
cg.isijournalISI Journal
cg.issn0167-4412
cg.issue3
cg.journalPlant Molecular Biology
cg.reviewStatusPeer Review
cg.subject.actionAreaGenetic Innovation
cg.subject.iitaAGRONOMY
cg.subject.iitaBIOMETRICS
cg.subject.iitaCASSAVA
cg.subject.iitaGENETIC IMPROVEMENT
cg.subject.iitaPLANT BREEDING
cg.subject.iitaPLANT GENETIC RESOURCES
cg.subject.iitaPLANT HEALTH
cg.subject.iitaPLANT PRODUCTION
cg.volume109
dc.contributor.authorRabbi, Ismail Y.
dc.contributor.authorKayondo, S.I.
dc.contributor.authorBauchet, Guillaume J.
dc.contributor.authorYusuf, M.
dc.contributor.authorAghogho, C.I.
dc.contributor.authorOgunpaimo, K.
dc.contributor.authorUwugiaren, R.
dc.contributor.authorSmith, I.A.
dc.contributor.authorPeteti, P.
dc.contributor.authorAgbona, A.
dc.contributor.authorParkes, Elizabeth Y.
dc.contributor.authorEzenwaka, L.
dc.contributor.authorWolfe, M.
dc.contributor.authorJannink, Jean-Luc
dc.contributor.authorEgesi, Chiedozie N.
dc.contributor.authorKulakow, Peter A.
dc.date.accessioned2021-01-25T14:54:57Zen
dc.date.available2021-01-25T14:54:57Zen
dc.identifier.urihttps://hdl.handle.net/10568/110973
dc.titleGenome-wide association analysis reveals new insights into the genetic architecture of defensive, agro-morphological and quality-related traits in cassavaen
dcterms.abstractCassava (Manihot esculenta) is one of the most important starchy root crops in the tropics due to its adaptation to marginal environments. Genetic progress in this clonally propagated crop can be accelerated through the discovery of markers and candidate genes that could be used in cassava breeding programs. We carried out a genome-wide association study (GWAS) using a panel of 5,310 clones developed at the International Institute of Tropical Agriculture - Nigeria. The population was genotyped at more than 100,000 SNP markers via genotyping-by-sequencing (GBS). Genomic regions underlying genetic variation for 14 traits classified broadly into four categories: biotic stress (cassava mosaic disease and cassava green mite severity); quality (dry matter content and carotenoid content) and plant agronomy (harvest index and plant type). We also included several agro-morphological traits related to leaves, stems and roots with high heritability. In total, 41 significant associations were uncovered. While some of the identified loci matched with those previously reported, we present additional association signals for the traits. We provide a catalogue of favourable alleles at the most significant SNP for each trait-locus combination and candidate genes occurring within the GWAS hits. These resources provide a foundation for the development of markers that could be used in cassava breeding programs and candidate genes for functional validation.en
dcterms.accessRightsOpen Access
dcterms.audienceScientists
dcterms.available2020-07-30
dcterms.bibliographicCitationRabbi, I.Y., Kayondo, S.I., Bauchet, G., Muyideen, Y., Aghogho, C.I., Ogunpaimo, K., ... & Kulakow, P. (2020). Genome-wide association analysis reveals new insights into the genetic architecture of defensive, agro-morphological and quality-related traits in cassava. Plant Molecular Biology, 1-19.en
dcterms.extentp. 195-213
dcterms.issued2022-06
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherSpringer
dcterms.subjectcassavaen
dcterms.subjectbreedingen
dcterms.subjectgenomesen
dcterms.subjectpest resistanceen
dcterms.subjectdisease resistanceen
dcterms.subjectmorphologyen
dcterms.subjectgenotypesen
dcterms.typeJournal Article

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