Molecular and agro-morphological evaluations of interspecific hybridisation in two wild yams (Dioscorea spp.) for genetic improvement

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cg.authorship.typesCGIAR and developing country instituteen
cg.contributor.affiliationUniversity of Ibadanen
cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.initiativeAccelerated Breeding
cg.coverage.countryNigeria
cg.coverage.iso3166-alpha2NG
cg.coverage.regionAfrica
cg.coverage.regionWestern Africa
cg.creator.identifierOyedoyin F.P: 0000-0003-4438-9153
cg.creator.identifierPaterne AGRE: 0000-0003-1231-2530
cg.creator.identifierAsratAsfaw: 0000-0002-4859-0631
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1016/j.egg.2025.100345en
cg.identifier.iitathemeBIOTECH & PLANT BREEDING
cg.issn2405-9854en
cg.issue100345en
cg.journalEcological Genetics and Genomicsen
cg.reviewStatusPeer Reviewen
cg.subject.actionAreaGenetic Innovation
cg.subject.iitaAGRONOMYen
cg.subject.iitaFOOD SECURITYen
cg.subject.iitaPLANT BREEDINGen
cg.subject.iitaPLANT PRODUCTIONen
cg.subject.iitaYAMen
cg.subject.impactAreaNutrition, health and food security
cg.subject.impactPlatformNutrition, Health and Food Security
cg.subject.sdgSDG 2 - Zero hungeren
cg.volume35en
dc.contributor.authorOyedoyin, F.P.en
dc.contributor.authorOlawuyi, O.J.en
dc.contributor.authorAgre, P.A.en
dc.contributor.authorAsfaw, A.en
dc.date.accessioned2025-04-16T11:13:15Zen
dc.date.available2025-04-16T11:13:15Zen
dc.identifier.urihttps://hdl.handle.net/10568/174221
dc.titleMolecular and agro-morphological evaluations of interspecific hybridisation in two wild yams (Dioscorea spp.) for genetic improvementen
dcterms.abstractYam (Dioscorea spp.) is an essential food crop particularly in Sub-Saharan Africa. As breeders struggle to meet the rising demand for high-yielding and quality yam, hybridising underutilised wild species presents a promising solution. This study therefore investigated the potentials of hybridising two wild yam species, Dioscorea abyssinica and Dioscorea praehensilis known for their resilience and genetic potential as ancestors of the cultivated West African yam, Dioscorea rotundata, using hand-pollination method. Hybridity was assessed with eight subsets of Kompetitive allele-specific markers, and the progenies were evaluated morphologically using standard descriptors. Markers detected heterozygosity in 65 (92.9 %) of 70 progenies, confirming successful hybridisation. Significant (p < 0.05) variation was observed in growth and yield traits, with TDabp2101048, TDabp2101010, and TDabp2101068 excelling in stem length (348.91 cm), internode length (23.36 cm), and vigour (5.85) respectively. The highest tuber length (42.91 cm), tuber weight (1.14 kg) and number of tubers (4) were produced by TDabp2101052, TDabp2101046 and TDabp2101054, respectively. Progenies showed comparable traits to D. rotundata, indicating high genetic compatibility. These findings suggest putative potential for selecting superior genotypes, improving yam breeding programs through genetic diversity, enhancing crop resilience and productivity.en
dcterms.accessRightsLimited Access
dcterms.audienceScientistsen
dcterms.available2025-03-26
dcterms.bibliographicCitationOyedoyin, F.P., Olawuyi, O.J., Agre, P.A. & Asfaw, A. (2025). Molecular and agro-morphological evaluations of interspecific hybridisation in two wild yams (Dioscorea spp.) for genetic improvement. Ecological Genetics and Genomics, 35: 100345, 1-7.en
dcterms.extent1-7en
dcterms.issued2025-06
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.subjectyamsen
dcterms.subjectdioscoreaen
dcterms.subjectbreedingen
dcterms.subjectgenotypesen
dcterms.typeJournal Article

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