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Combining ability and heritability analysis of sweetpotato weevil resistance, root yield, and dry matter content in sweetpotato
Efficient 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...
Autores principales: | , , , , , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9490021/ https://www.ncbi.nlm.nih.gov/pubmed/36160986 http://dx.doi.org/10.3389/fpls.2022.956936 |
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author | Mugisa, Immaculate Karungi, Jeninah Musana, Paul Odama, Roy Alajo, Agnes Chelangat, Doreen M. Anyanga, Milton O. Oloka, Bonny M. Gonçalves dos Santos, Iara Talwana, Herbert Ochwo-Ssemakula, Mildred Edema, Richard Gibson, Paul Ssali, Reuben Campos, Hugo Olukolu, Bode A. da Silva Pereira, Guilherme Yencho, Craig Yada, Benard |
author_facet | Mugisa, Immaculate Karungi, Jeninah Musana, Paul Odama, Roy Alajo, Agnes Chelangat, Doreen M. Anyanga, Milton O. Oloka, Bonny M. Gonçalves dos Santos, Iara Talwana, Herbert Ochwo-Ssemakula, Mildred Edema, Richard Gibson, Paul Ssali, Reuben Campos, Hugo Olukolu, Bode A. da Silva Pereira, Guilherme Yencho, Craig Yada, Benard |
author_sort | Mugisa, Immaculate |
collection | PubMed |
description | Efficient 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 F(1) 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. |
format | Online Article Text |
id | pubmed-9490021 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-94900212022-09-22 Combining ability and heritability analysis of sweetpotato weevil resistance, root yield, and dry matter content in sweetpotato Mugisa, Immaculate Karungi, Jeninah Musana, Paul Odama, Roy Alajo, Agnes Chelangat, Doreen M. Anyanga, Milton O. Oloka, Bonny M. Gonçalves dos Santos, Iara Talwana, Herbert Ochwo-Ssemakula, Mildred Edema, Richard Gibson, Paul Ssali, Reuben Campos, Hugo Olukolu, Bode A. da Silva Pereira, Guilherme Yencho, Craig Yada, Benard Front Plant Sci Plant Science Efficient 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 F(1) 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. Frontiers Media S.A. 2022-09-07 /pmc/articles/PMC9490021/ /pubmed/36160986 http://dx.doi.org/10.3389/fpls.2022.956936 Text en Copyright © 2022 Mugisa, Karungi, Musana, Odama, Alajo, Chelangat, Anyanga, Oloka, Gonçalves dos Santos, Talwana, Ochwo-Ssemakula, Edema, Gibson, Ssali, Campos, Olukolu, da Silva Pereira, Yencho and Yada. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Plant Science Mugisa, Immaculate Karungi, Jeninah Musana, Paul Odama, Roy Alajo, Agnes Chelangat, Doreen M. Anyanga, Milton O. Oloka, Bonny M. Gonçalves dos Santos, Iara Talwana, Herbert Ochwo-Ssemakula, Mildred Edema, Richard Gibson, Paul Ssali, Reuben Campos, Hugo Olukolu, Bode A. da Silva Pereira, Guilherme Yencho, Craig Yada, Benard Combining ability and heritability analysis of sweetpotato weevil resistance, root yield, and dry matter content in sweetpotato |
title | Combining ability and heritability analysis of sweetpotato weevil resistance, root yield, and dry matter content in sweetpotato |
title_full | Combining ability and heritability analysis of sweetpotato weevil resistance, root yield, and dry matter content in sweetpotato |
title_fullStr | Combining ability and heritability analysis of sweetpotato weevil resistance, root yield, and dry matter content in sweetpotato |
title_full_unstemmed | Combining ability and heritability analysis of sweetpotato weevil resistance, root yield, and dry matter content in sweetpotato |
title_short | Combining ability and heritability analysis of sweetpotato weevil resistance, root yield, and dry matter content in sweetpotato |
title_sort | combining ability and heritability analysis of sweetpotato weevil resistance, root yield, and dry matter content in sweetpotato |
topic | Plant Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9490021/ https://www.ncbi.nlm.nih.gov/pubmed/36160986 http://dx.doi.org/10.3389/fpls.2022.956936 |
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