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dc.contributor.authorMondo, J.
dc.contributor.authorAgre, A.P.
dc.contributor.authorAsiedu, R.
dc.contributor.authorAkoroda, M.
dc.contributor.authorAsfaw, A.
dc.date.accessioned2021-07-14T11:04:26Z
dc.date.available2021-07-14T11:04:26Z
dc.date.issued2021
dc.identifier.citationMondo, J., Agre, A.P., Asiedu, R., Akoroda, M. & Asfaw, A. (2021). Genome-wide association studies for sex determination and cross-compatibility in water yam (Dioscorea alata L.). Plants, 10(7), 1412: 1-18.
dc.identifier.issn2223-7747
dc.identifier.urihttps://hdl.handle.net/20.500.12478/7175
dc.description.abstractYam (Dioscorea spp.) species are predominantly dioecious, with male and female flowers borne on separate individuals. Cross-pollination is, therefore, essential for gene flow among and within yam species to achieve breeding objectives. Understanding genetic mechanisms underlying sex determination and cross-compatibility is crucial for planning a successful hybridization program. This study used the genome-wide association study (GWAS) approach for identifying genomic regions linked to sex and cross-compatibility in water yam (Dioscorea alata L.). We identified 54 markers linked to flower sex determination, among which 53 markers were on chromosome 6 and one on chromosome 11. Our result ascertained that D. alata is characterized by the male heterogametic sex determination system (XX/XY). The cross-compatibility indices, average crossability rate (ACR) and percentage high crossability (PHC), were controlled by loci on chromosomes 1, 6 and 17. Of the significant loci, SNPs located on chromosomes 1 and 17 were the most promising for ACR and PHC, respectively, and should be validated for use in D. alata hybridization activities to predict cross-compatibility success. A total of 61 putative gene/protein families with direct or indirect influence on plant reproduction were annotated in chromosomic regions controlling the target traits. This study provides valuable insights into the genetic control of D. alata sexual reproduction. It opens an avenue for developing genomic tools for predicting hybridization success in water yam breeding programs.
dc.description.sponsorshipBill & Melinda Gates Foundation
dc.format.extent1-18
dc.language.isoen
dc.subjectSex Determination
dc.subjectCross Pollination
dc.subjectYams
dc.subjectDioscorea Alata
dc.subjectNigeria
dc.subjectGenomes
dc.titleGenome-wide association studies for sex determination and cross-compatibility in water yam (Dioscorea alata L.)
dc.typeJournal Article
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationUniversity of Ibadan
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemeBiotech and Plant Breeding
cg.researchthemePlant Production and Health
cg.identifier.bibtexciteidMONDO:2021a
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 Health
cg.iitasubjectPlant Production
cg.iitasubjectYam
cg.journalPlants
cg.notesOpen Access Journal; Published online: 10 Jul 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/10.3390/plants10071412
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
cg.identifier.issue7: 1412
cg.identifier.volume10


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