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

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dc.contributor.authorNorman, Prince Emmanuel
dc.contributor.authorTongoona, Pangirayi B.
dc.contributor.authorDanquah, Agyeman
dc.date.accessioned2023-04-21T18:52:50Z
dc.date.available2023-04-21T18:52:50Z
dc.date.issued2021-03-01
dc.descriptionJournal of Crop Improvement, Volume 35, No. 6en_US
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.en_US
dc.description.sponsorshipACE: Crop Improvementen_US
dc.identifier.citationhttps://doi.org/10.1080/15427528.2021.1881012en_US
dc.identifier.issn1542-7528
dc.identifier.urihttp://hdl.handle.net/123456789/1495
dc.language.isoenen_US
dc.publisherTaylor & Francisen_US
dc.subjectAMMI stabilityen_US
dc.subjectgenotype by environment interactionen_US
dc.subjectgenotype by trait interactionen_US
dc.subjectgenetic parameter estimateen_US
dc.subjectyamen_US
dc.subjectEric Y. Danquahen_US
dc.subjectPaterne A. Agreen_US
dc.subjectAfolabi Agbonaen_US
dc.subjectRobert Asieduen_US
dc.subjectAsrat Asfawen_US
dc.subjectAgricultureen_US
dc.subjectUniversity of Ghanaen_US
dc.titleGenetic parameter estimation and selection in advanced breeding population of white Guinea yamen_US
dc.typeArticleen_US
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