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...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-09-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2022.956936/full |
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| author | Immaculate Mugisa Immaculate Mugisa Jeninah Karungi Paul Musana Roy Odama Agnes Alajo Doreen M. Chelangat Milton O. Anyanga Bonny M. Oloka Iara Gonçalves dos Santos Herbert Talwana Mildred Ochwo-Ssemakula Richard Edema Paul Gibson Reuben Ssali Hugo Campos Bode A. Olukolu Guilherme da Silva Pereira Craig Yencho Benard Yada |
| author_facet | Immaculate Mugisa Immaculate Mugisa Jeninah Karungi Paul Musana Roy Odama Agnes Alajo Doreen M. Chelangat Milton O. Anyanga Bonny M. Oloka Iara Gonçalves dos Santos Herbert Talwana Mildred Ochwo-Ssemakula Richard Edema Paul Gibson Reuben Ssali Hugo Campos Bode A. Olukolu Guilherme da Silva Pereira Craig Yencho Benard Yada |
| author_sort | Immaculate Mugisa |
| collection | DOAJ |
| 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 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. |
| first_indexed | 2024-04-11T10:54:16Z |
| format | Article |
| id | doaj.art-7974143ba03e4c7d99e7d2d31b0c6cd2 |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-04-11T10:54:16Z |
| publishDate | 2022-09-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-7974143ba03e4c7d99e7d2d31b0c6cd22022-12-22T04:28:48ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2022-09-011310.3389/fpls.2022.956936956936Combining ability and heritability analysis of sweetpotato weevil resistance, root yield, and dry matter content in sweetpotatoImmaculate Mugisa0Immaculate Mugisa1Jeninah Karungi2Paul Musana3Roy Odama4Agnes Alajo5Doreen M. Chelangat6Milton O. Anyanga7Bonny M. Oloka8Iara Gonçalves dos Santos9Herbert Talwana10Mildred Ochwo-Ssemakula11Richard Edema12Paul Gibson13Reuben Ssali14Hugo Campos15Bode A. Olukolu16Guilherme da Silva Pereira17Craig Yencho18Benard Yada19National Crops Resources Research Institute (NaCRRI), NARO, Kampala, UgandaDepartment of Agricultural Production, Makerere University, Kampala, UgandaDepartment of Agricultural Production, Makerere University, Kampala, UgandaNational Crops Resources Research Institute (NaCRRI), NARO, Kampala, UgandaNational Crops Resources Research Institute (NaCRRI), NARO, Kampala, UgandaNational Crops Resources Research Institute (NaCRRI), NARO, Kampala, UgandaNational Crops Resources Research Institute (NaCRRI), NARO, Kampala, UgandaNational Crops Resources Research Institute (NaCRRI), NARO, Kampala, UgandaNational Crops Resources Research Institute (NaCRRI), NARO, Kampala, UgandaDepartment of Agronomy, Federal University of Viçosa, Viçosa, Minas Gerais, BrazilDepartment of Agricultural Production, Makerere University, Kampala, UgandaDepartment of Agricultural Production, Makerere University, Kampala, UgandaDepartment of Agricultural Production, Makerere University, Kampala, UgandaDepartment of Agricultural Production, Makerere University, Kampala, UgandaInternational Potato Center, Kampala, UgandaInternational Potato Center, Lima, PeruDepartment of Entomology and Plant Pathology, University of Tennessee, Knoxville, TN, United StatesDepartment of Agronomy, Federal University of Viçosa, Viçosa, Minas Gerais, BrazilDepartment of Horticultural Science, North Carolina State University, Raleigh, NC, United StatesNational Crops Resources Research Institute (NaCRRI), NARO, Kampala, UgandaEfficient 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.https://www.frontiersin.org/articles/10.3389/fpls.2022.956936/fullclonescrossesfamiliesmixed modelsCylas spp.Ipomoea batatas |
| spellingShingle | Immaculate Mugisa Immaculate Mugisa Jeninah Karungi Paul Musana Roy Odama Agnes Alajo Doreen M. Chelangat Milton O. Anyanga Bonny M. Oloka Iara Gonçalves dos Santos Herbert Talwana Mildred Ochwo-Ssemakula Richard Edema Paul Gibson Reuben Ssali Hugo Campos Bode A. Olukolu Guilherme da Silva Pereira Craig Yencho Benard Yada Combining ability and heritability analysis of sweetpotato weevil resistance, root yield, and dry matter content in sweetpotato Frontiers in Plant Science clones crosses families mixed models Cylas spp. Ipomoea batatas |
| 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 | clones crosses families mixed models Cylas spp. Ipomoea batatas |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2022.956936/full |
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