Genomic prediction of tocochromanols in exotic-derived maize

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cg.authorship.typesNot CGIAR developing country institute
cg.authorship.typesNot CGIAR international institute
cg.contributor.affiliationIowa State University
cg.contributor.affiliationHubei Hongshan Laboratory
cg.contributor.affiliationHuazhong Agricultural University
cg.contributor.affiliationUnited States Department of Agriculture
cg.contributor.affiliationCornell University
cg.contributor.affiliationMichigan State University
cg.contributor.donorNational Science Foundation
cg.contributor.donorUnited States Department of Agriculture
cg.contributor.donorCGIAR Trust Fund
cg.contributor.donorIowa State University Plant Sciences Institute
cg.contributor.donorUnited States Agency for International Development
cg.howPublishedFormally Published
cg.identifier.doihttps://doi.org/10.1002/tpg2.20286
cg.identifier.projectIFPRI - HarvestPlus
cg.identifier.publicationRankNot ranked
cg.isijournalISI Journal
cg.issn1940-3372
cg.issue4
cg.journalPlant Genome
cg.reviewStatusPeer Review
cg.subject.impactAreaNutrition, health and food security
cg.volume16
dc.contributor.authorTibbs-Cortes, Laura E.
dc.contributor.authorGuo, Tingting
dc.contributor.authorLi, Xianran
dc.contributor.authorTanaka, Ryokei
dc.contributor.authorVanous, Adam E.
dc.contributor.authorPeters, David
dc.contributor.authorGardner, Candice
dc.contributor.authorMagallanes-Lundback, Maria
dc.contributor.authorDeason, Nicholas T.
dc.contributor.authorDellaPenna, Dean
dc.contributor.authorGore, Michael A.
dc.contributor.authorYu, Jianming
dc.date.accessioned2025-07-17T17:01:50Z
dc.date.available2025-07-17T17:01:50Z
dc.identifier.urihttps://hdl.handle.net/10568/175678
dc.titleGenomic prediction of tocochromanols in exotic-derived maizeen
dcterms.abstractTocochromanols (vitamin E) are an essential part of the human diet. Plant products, including maize (Zea mays L.) grain, are the major dietary source of tocochromanols; therefore, breeding maize with higher vitamin content (biofortification) could improve human nutrition. Incorporating exotic germplasm in maize breeding for trait improvement including biofortification is a promising approach and an important research topic. However, information about genomic prediction of exotic-derived lines using available training data from adapted germplasm is limited. In this study, genomic prediction was systematically investigated for nine tocochromanol traits within both an adapted (Ames Diversity Panel [AP]) and an exotic-derived (Backcrossed Germplasm Enhancement of Maize [BGEM]) maize population. Although prediction accuracies up to 0.79 were achieved using genomic best linear unbiased prediction (gBLUP) when predicting within each population, genomic prediction of BGEM based on an AP training set resulted in low prediction accuracies. Optimal training population (OTP) design methods fast and unique representative subset selection (FURS), maximization of connectedness and diversity (MaxCD), and partitioning around medoids (PAM) were adapted for inbreds and, along with the methods mean coefficient of determination (CDmean) and mean prediction error variance (PEVmean), often improved prediction accuracies compared with random training sets of the same size. When applied to the combined population, OTP designs enabled successful prediction of the rest of the exotic-derived population. Our findings highlight the importance of leveraging genotype data in training set design to efficiently incorporate new exotic germplasm into a plant breeding program.en
dcterms.accessRightsOpen Access
dcterms.audienceScientists
dcterms.available2022-12-27
dcterms.bibliographicCitationTibbs-Cortes, Laura E.; Guo, Tingting; Li, Xianran; Tanaka, Ryokei; Vanous, Adam E.; Peters, David; et al. 2023. Genomic prediction of tocochromanols in exotic-derived maize. Plant Genome 16(4): e20286. https://doi.org/10.1002/tpg2.20286
dcterms.issued2023-12
dcterms.languageen
dcterms.licenseCC-BY-NC-ND-4.0
dcterms.publisherWiley
dcterms.subjectvitamin E
dcterms.subjectmaize
dcterms.subjectnutrition
dcterms.subjectgermplasm
dcterms.subjectbiofortification
dcterms.subjectfat soluble vitamins
dcterms.typeJournal Article

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