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

Simple item page
cg.authorship.typesCGIAR and developing country instituteen
cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationInternational Potato Centeren
cg.contributor.donorBill & Melinda Gates Foundationen
cg.contributor.donorGenomic Tools for Sweetpotato Improvementen
cg.contributor.donorAfrica Centres of Excellenceen
cg.contributor.donorWorld Banken
cg.contributor.donorCGIAR Trust Funden
cg.contributor.initiativeAccelerated Breeding
cg.creator.identifierMugisa I: 0000-0002-2603-5397en
cg.creator.identifierReuben SSALI Tendo: 0000-0002-8143-6564en
cg.creator.identifierHugo Campos: 0000-0003-0070-1336en
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.3389/fpls.2022.956936en
cg.isijournalISI Journalen
cg.issn1664-462Xen
cg.journalFrontiers in Plant Scienceen
cg.reviewStatusPeer Reviewen
cg.subject.cipGENETIC RESOURCESen
cg.subject.cipGENETICS, GENOMICS AND CROP IMPROVEMENT SCIENCES GGCIen
cg.subject.cipSWEETPOTATOESen
cg.subject.cipSWEETPOTATO AGRI-FOOD SYSTEMSen
cg.volume13en
dc.contributor.authorMugisa, I.en
dc.contributor.authorKarungi, J.en
dc.contributor.authorMusana, P.en
dc.contributor.authorOdama, R.en
dc.contributor.authorAlajo, A.en
dc.contributor.authorChelangat, D.M.en
dc.contributor.authorAnyanga, M.O.en
dc.contributor.authorOloka, B.M.en
dc.contributor.authorGonçalves dos Santos, I.en
dc.contributor.authorTalwana, Herbert A.L.en
dc.contributor.authorOchwo-Ssemakula, Mildreden
dc.contributor.authorEdema, Richarden
dc.contributor.authorGibson, P.en
dc.contributor.authorSsali, R.T.en
dc.contributor.authorCampos, Hugoen
dc.contributor.authorOlukolu, B.A.en
dc.contributor.authorSilva Pereira, G. daen
dc.contributor.authorYencho, C.en
dc.contributor.authorYada, B.en
dc.date.accessioned2022-10-04T21:39:50Zen
dc.date.available2022-10-04T21:39:50Zen
dc.identifier.urihttps://hdl.handle.net/10568/122019
dc.titleCombining ability and heritability analysis of sweetpotato weevil resistance, root yield, and dry matter content in sweetpotatoen
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
dcterms.accessRightsOpen Access
dcterms.audienceAcademicsen
dcterms.audienceCGIARen
dcterms.audienceDevelopment Practitionersen
dcterms.audienceDonorsen
dcterms.audienceExtensionen
dcterms.audienceFarmersen
dcterms.audienceGeneral Publicen
dcterms.audienceNGOsen
dcterms.audiencePolicy Makersen
dcterms.audienceScientistsen
dcterms.available2022-09-07en
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
dcterms.extent13 p.en
dcterms.issued2022-09-07en
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherFrontiers Mediaen
dcterms.subjectsweet potatoesen
dcterms.subjectclonesen
dcterms.subjectfamiliesen
dcterms.subjectipomoea batatasen
dcterms.typeJournal Article

Files

License bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

CIP Journal Articles
CGIAR Initiative on Accelerated Breeding
CIP Science Goal: Crop Improvement
SweetGAINS: Genetics Advances and Innovative Seed Systems for Sweet Potato