Combining ability and heritability analysis of sweetpotato weevil resistance, root yield, and dry matter content in sweetpotato

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cg.authorship.typesCGIAR and developing country instituteen_US
cg.authorship.typesCGIAR and advanced research instituteen_US
cg.contributor.affiliationInternational Potato Centeren_US
cg.contributor.donorBill & Melinda Gates Foundationen_US
cg.contributor.donorGenomic Tools for Sweetpotato Improvementen_US
cg.contributor.donorAfrica Centres of Excellenceen_US
cg.contributor.donorWorld Banken_US
cg.contributor.donorCGIAR Trust Funden_US
cg.contributor.initiativeAccelerated Breedingen_US
cg.creator.identifierMugisa I: 0000-0002-2603-5397en_US
cg.creator.identifierReuben SSALI Tendo: 0000-0002-8143-6564en_US
cg.creator.identifierHugo Campos: 0000-0003-0070-1336en_US
cg.howPublishedFormally Publisheden_US
cg.identifier.doihttps://doi.org/10.3389/fpls.2022.956936en_US
cg.isijournalISI Journalen_US
cg.issn1664-462Xen_US
cg.journalFrontiers in Plant Scienceen_US
cg.reviewStatusPeer Reviewen_US
cg.subject.cipGENETIC RESOURCESen_US
cg.subject.cipGENETICS, GENOMICS AND CROP IMPROVEMENT SCIENCES GGCIen_US
cg.subject.cipSWEETPOTATOESen_US
cg.subject.cipSWEETPOTATO AGRI-FOOD SYSTEMSen_US
cg.volume13en_US
dc.contributor.authorMugisa, I.en_US
dc.contributor.authorKarungi, J.en_US
dc.contributor.authorMusana, P.en_US
dc.contributor.authorOdama, R.en_US
dc.contributor.authorAlajo, A.en_US
dc.contributor.authorChelangat, D.M.en_US
dc.contributor.authorAnyanga, M.O.en_US
dc.contributor.authorOloka, B.M.en_US
dc.contributor.authorGonçalves dos Santos, I.en_US
dc.contributor.authorTalwana, Herbert A.L.en_US
dc.contributor.authorOchwo-Ssemakula, Mildreden_US
dc.contributor.authorEdema, Richarden_US
dc.contributor.authorGibson, P.en_US
dc.contributor.authorSsali, R.T.en_US
dc.contributor.authorCampos, Hugoen_US
dc.contributor.authorOlukolu, B.A.en_US
dc.contributor.authorSilva Pereira, G. daen_US
dc.contributor.authorYencho, C.en_US
dc.contributor.authorYada, B.en_US
dc.date.accessioned2022-10-04T21:39:50Zen_US
dc.date.available2022-10-04T21:39:50Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/122019en_US
dc.titleCombining ability and heritability analysis of sweetpotato weevil resistance, root yield, and dry matter content in sweetpotatoen_US
dcterms.abstractEfficient breeding and selection of superior genotypes requires a comprehensive understanding of the genetics of traits. This study was aimed at establishing the general combining ability (GCA), specific combining ability (SCA), and heritability of sweetpotato weevil (Cylas spp.) resistance, storage root yield, and dry matter content in a sweetpotato multi-parental breeding population. A population of 1,896 F1 clones obtained from an 8 × 8 North Carolina II design cross was evaluated with its parents in the field at two sweetpotato weevil hotspots in Uganda, using an augmented row-column design. Clone roots were further evaluated in three rounds of a no-choice feeding laboratory bioassay. Significant GCA effects for parents and SCA effects for families were observed for most traits and all variance components were highly significant (p ≤ 0.001). Narrow-sense heritability estimates for weevil severity, storage root yield, and dry matter content were 0.35, 0.36, and 0.45, respectively. Parental genotypes with superior GCA for weevil resistance included “Mugande,” NASPOT 5, “Dimbuka-bukulula,” and “Wagabolige.” On the other hand, families that displayed the highest levels of resistance to weevils included “Wagabolige” × NASPOT 10 O, NASPOT 5 × “Dimbuka-bukulula,” “Mugande” × “Dimbuka-bukulula,” and NASPOT 11 × NASPOT 7. The moderate levels of narrow-sense heritability observed for the traits, coupled with the significant GCA and SCA effects, suggest that there is potential for their improvement through conventional breeding via hybridization and progeny selection and advancement. Although selection for weevil resistance may, to some extent, be challenging for breeders, efforts could be boosted through applying genomics-assisted breeding. Superior parents and families identified through this study could be deployed in further research involving the genetic improvement of these traits.en_US
dcterms.accessRightsOpen Accessen_US
dcterms.audienceAcademicsen_US
dcterms.audienceCGIARen_US
dcterms.audienceDevelopment Practitionersen_US
dcterms.audienceDonorsen_US
dcterms.audienceExtensionen_US
dcterms.audienceFarmersen_US
dcterms.audienceGeneral Publicen_US
dcterms.audienceNGOsen_US
dcterms.audiencePolicy Makersen_US
dcterms.audienceScientistsen_US
dcterms.available2022-09-07en_US
dcterms.bibliographicCitationMugisa, I.; Karungi, J.; Musana, P.; Odama, R.; Alajo, A.; Chelangat, D. M.; Anyanga, M. O.; Oloka, B. M.; Gonçalves dos Santos, I.; Talwana, H.; Ochwo-Ssemakula, M.; Edema, R.; Gibson, P.; Ssali, R.; Campos, H.; Olukolu, B. A.; da Silva Pereira, G.; Yencho, C.; Yada, B. 2022. Combining ability and heritability analysis of sweetpotato weevil resistance, root yield, and dry matter content in sweetpotato. Frontiers in Plant Science, 13. ISSN 1664-462X. 13 p.en_US
dcterms.extent13 p.en_US
dcterms.issued2022-09-07en_US
dcterms.languageenen_US
dcterms.licenseCC-BY-4.0en_US
dcterms.publisherFrontiers Mediaen_US
dcterms.subjectsweet potatoesen_US
dcterms.subjectclonesen_US
dcterms.subjectfamiliesen_US
dcterms.subjectipomoea batatasen_US
dcterms.typeJournal Articleen_US

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