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Genetic parameter estimation and selection in advanced breeding population of white Guinea yam

dc.contributor.authorNorman, P.E.
dc.contributor.authorTongoona, P.B.
dc.contributor.authorDanquah, A.
dc.contributor.authorDanquah, E.Y.
dc.contributor.authorAgre, P.A.
dc.contributor.authorAgbona, A.
dc.contributor.authorAsiedu, R.
dc.contributor.authorAsfaw, A.
dc.date.accessioned2021-04-22T14:01:49Z
dc.date.available2021-04-22T14:01:49Z
dc.date.issued2021
dc.identifier.citationNorman, P.E., Tongoona, P.B., Danquah, A., Danquah, E.Y., Agre, P.A., Agbona, A., ... & Asfaw, A. (2021). Genetic parameter estimation and selection in advanced breeding population of white Guinea yam. Journal of Crop Improvement, 1-26.
dc.identifier.urihttps://hdl.handle.net/20.500.12478/7100
dc.description.abstractWhite Guinea yam (Dioscorea rotundata Poir.) is an important tuber crop grown extensively in tropical regions of West African yam belt. Tuber yield, dry matter content, and tolerance to yam mosaic virus are key traits used for identification and selection of superior varieties for commercial deployment. In this study, we estimated genetic parameters for fresh tuber yield, tuber dry matter content, and quantitative field tolerance to yam mosaic virus in 49 clones grown in multi-environment trials (METs). We conducted genomic prediction involving 6337 single nucleotide polymorphisms (SNPs) and phenotypic field evaluation of data collected on the three traits from four sites. Additive genetic and non-genetic factors contributed significantly to phenotypic variation of studied yam traits in METs but to varying degrees. The non-genetic effects were relatively high for most of the measured traits. Narrow-sense heritability values were low (<0.30) for all studied traits. Further analysis of the performance of the clones at test sites with additive main effects and multiplicative interaction (AMMI) analysis exhibited significant genotype by environment interactions (GEI) for the three traits. The AMMI identified TDr10/00412, TDr11/00055, and TDr09/00135 clones with lowest mean trait stability index and outstanding performance for fresh tuber yield (t ha−1), tuber dry matter, and mosaic virus resistance across sites. The elite clones identified could serve as useful source of alleles for the genetic improvement of the crop and possibly considered for release to farmers.
dc.description.sponsorshipBill & Melinda Gates Foundation
dc.description.sponsorshipInternational Development Research Centre
dc.format.extent1-26
dc.language.isoen
dc.subjectYams
dc.subjectGenotypes
dc.subjectGenotype Environment Interaction
dc.subjectGenetic Parameters
dc.subjectPhenotypes
dc.titleGenetic parameter estimation and selection in advanced breeding population of white Guinea yam
dc.typeJournal Article
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationUniversity of Ghana
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemeBiotech and Plant Breeding
cg.identifier.bibtexciteidNORMAN:2021
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAgronomy
cg.iitasubjectFood Security
cg.iitasubjectGenetic Improvement
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Genetic Resources
cg.iitasubjectPlant Production
cg.iitasubjectYam
cg.journalJournal of Crop Improvement
cg.notesOpen Access Article; Published online: 01 Mar 2021
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution 4.0 (CC BY 0.0)
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1080/15427528.2021.1881012
cg.iitaauthor.identifierPrince Emmanuel Norman: 0000-0002-0150-8610
cg.iitaauthor.identifierPaterne AGRE: 0000-0003-1231-2530
cg.iitaauthor.identifierRobert Asiedu: 0000-0001-8943-2376
cg.iitaauthor.identifierAsrat Asfaw: 0000-0002-4859-0631
cg.futureupdate.requiredNo


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