Marker-based estimates reveal significant non-additive effects in clonally propagated cassava (Manihot esculenta): implications for the prediction of total genetic value and the selection of varieties
In clonally propagated crops, non-additive genetic effects can be effectively exploited by the identification of superior genetic individuals as varieties. Cassava (Manihot esculenta Crantz) is a clonally propagated staple food crop that feeds hundreds of millions. We quantified the amount and natur...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Oxford University Press
2016
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/77138 |
| _version_ | 1855516013183893504 |
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| author | Wolfe, M.D. Kulakow, Peter A. Rabbi, Ismail Y. Jannink, Jean-Luc |
| author_browse | Jannink, Jean-Luc Kulakow, Peter A. Rabbi, Ismail Y. Wolfe, M.D. |
| author_facet | Wolfe, M.D. Kulakow, Peter A. Rabbi, Ismail Y. Jannink, Jean-Luc |
| author_sort | Wolfe, M.D. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | In clonally propagated crops, non-additive genetic effects can be effectively exploited by the identification of superior genetic individuals as varieties. Cassava (Manihot esculenta Crantz) is a clonally propagated staple food crop that feeds hundreds of millions. We quantified the amount and nature of non-additive genetic variation for key traits in a breeding population of cassava from sub-Saharan Africa using additive and non-additive genome-wide marker-based relationship matrices. We then assessed the accuracy of genomic prediction of additive compared to total (additive plus non-additive) genetic value. We confirmed previous findings based on diallel populations, that non-additive genetic variation is significant, especially for yield traits. Further, we show that we total genetic value correlated more strongly to observed phenotypes than did additive value, although this is constrained by low broad-sense heritability and is not beneficial for traits with already high heritability. We address the implication of these results for cassava breeding and put our work in the context of previous results in cassava, and other plant and animal species. |
| format | Journal Article |
| id | CGSpace77138 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Oxford University Press |
| publisherStr | Oxford University Press |
| record_format | dspace |
| spelling | CGSpace771382025-11-11T10:04:18Z Marker-based estimates reveal significant non-additive effects in clonally propagated cassava (Manihot esculenta): implications for the prediction of total genetic value and the selection of varieties Wolfe, M.D. Kulakow, Peter A. Rabbi, Ismail Y. Jannink, Jean-Luc cassava food crops genomic features genetics molecular biology In clonally propagated crops, non-additive genetic effects can be effectively exploited by the identification of superior genetic individuals as varieties. Cassava (Manihot esculenta Crantz) is a clonally propagated staple food crop that feeds hundreds of millions. We quantified the amount and nature of non-additive genetic variation for key traits in a breeding population of cassava from sub-Saharan Africa using additive and non-additive genome-wide marker-based relationship matrices. We then assessed the accuracy of genomic prediction of additive compared to total (additive plus non-additive) genetic value. We confirmed previous findings based on diallel populations, that non-additive genetic variation is significant, especially for yield traits. Further, we show that we total genetic value correlated more strongly to observed phenotypes than did additive value, although this is constrained by low broad-sense heritability and is not beneficial for traits with already high heritability. We address the implication of these results for cassava breeding and put our work in the context of previous results in cassava, and other plant and animal species. 2016-11-01 2016-09-27T11:11:37Z 2016-09-27T11:11:37Z Journal Article https://hdl.handle.net/10568/77138 en Open Access application/pdf Oxford University Press Wolfe, M.D., Kulakow, P., Rabbi, I. & Jannink, Jean-Luc. (2016). Marker-based estimates reveal significant non-additive effects in clonally propagated cassava (Manihot esculenta): implications for the prediction of total genetic value and the selection of varieties. G3-Genes Genomes Genetics, 1-41 |
| spellingShingle | cassava food crops genomic features genetics molecular biology Wolfe, M.D. Kulakow, Peter A. Rabbi, Ismail Y. Jannink, Jean-Luc Marker-based estimates reveal significant non-additive effects in clonally propagated cassava (Manihot esculenta): implications for the prediction of total genetic value and the selection of varieties |
| title | Marker-based estimates reveal significant non-additive effects in clonally propagated cassava (Manihot esculenta): implications for the prediction of total genetic value and the selection of varieties |
| title_full | Marker-based estimates reveal significant non-additive effects in clonally propagated cassava (Manihot esculenta): implications for the prediction of total genetic value and the selection of varieties |
| title_fullStr | Marker-based estimates reveal significant non-additive effects in clonally propagated cassava (Manihot esculenta): implications for the prediction of total genetic value and the selection of varieties |
| title_full_unstemmed | Marker-based estimates reveal significant non-additive effects in clonally propagated cassava (Manihot esculenta): implications for the prediction of total genetic value and the selection of varieties |
| title_short | Marker-based estimates reveal significant non-additive effects in clonally propagated cassava (Manihot esculenta): implications for the prediction of total genetic value and the selection of varieties |
| title_sort | marker based estimates reveal significant non additive effects in clonally propagated cassava manihot esculenta implications for the prediction of total genetic value and the selection of varieties |
| topic | cassava food crops genomic features genetics molecular biology |
| url | https://hdl.handle.net/10568/77138 |
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