Additive relationships and parentoffspring regression in Musa germplasm with intergeneration genome size polymorphism
Parent–offspring regression has often been used for the estimation of breeding value and narrow-sense heritability in experimental populations, particularly for diploid species with regular disomic inheritance. With polysomic inheritance, estimates of heritability based on parent–offspring regressio...
| Main Authors: | , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Elsevier
2012
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/79837 |
| _version_ | 1855529540430856192 |
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| author | Tenkouano, A. Crouch, J.H. Ortíz, R. |
| author_browse | Crouch, J.H. Ortíz, R. Tenkouano, A. |
| author_facet | Tenkouano, A. Crouch, J.H. Ortíz, R. |
| author_sort | Tenkouano, A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Parent–offspring regression has often been used for the estimation of breeding value and narrow-sense heritability in experimental populations, particularly for diploid species with regular disomic inheritance. With polysomic inheritance, estimates of heritability based on parent–offspring regression are expected to be systematically biased, particularly when intra- and inter-generation ploidy polymorphisms occur as a result of unusual megasporogenesis. Measuring the discrepancy between true and estimated heritability has important theoretical and practical implications for the genetic improvement of plantain and bananas. In this regard, formulas were developed to describe the relationships between parental and filial generations with different ploidy states and this information was used to estimate heritability for several traits of plantains and bananas. This approach may be extended to other polysomic species with similar meiotic behaviour and ploidy polymorphism. |
| format | Journal Article |
| id | CGSpace79837 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2012 |
| publishDateRange | 2012 |
| publishDateSort | 2012 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace798372024-05-01T08:18:04Z Additive relationships and parentoffspring regression in Musa germplasm with intergeneration genome size polymorphism Tenkouano, A. Crouch, J.H. Ortíz, R. gametes additive relationships heritability hybrids musa breeding ploidy polymorphism polysomic inheritance Parent–offspring regression has often been used for the estimation of breeding value and narrow-sense heritability in experimental populations, particularly for diploid species with regular disomic inheritance. With polysomic inheritance, estimates of heritability based on parent–offspring regression are expected to be systematically biased, particularly when intra- and inter-generation ploidy polymorphisms occur as a result of unusual megasporogenesis. Measuring the discrepancy between true and estimated heritability has important theoretical and practical implications for the genetic improvement of plantain and bananas. In this regard, formulas were developed to describe the relationships between parental and filial generations with different ploidy states and this information was used to estimate heritability for several traits of plantains and bananas. This approach may be extended to other polysomic species with similar meiotic behaviour and ploidy polymorphism. 2012-03 2017-02-13T13:41:40Z 2017-02-13T13:41:40Z Journal Article https://hdl.handle.net/10568/79837 en Limited Access Elsevier Tenkouano, A., Crouch, J.H. & Ortiz, R. (2012). Additive relationships and parent–offspring regression in Musa germplasm with intergeneration genome size polymorphism. Scientia Horticulturae, 136, 69-74. |
| spellingShingle | gametes additive relationships heritability hybrids musa breeding ploidy polymorphism polysomic inheritance Tenkouano, A. Crouch, J.H. Ortíz, R. Additive relationships and parentoffspring regression in Musa germplasm with intergeneration genome size polymorphism |
| title | Additive relationships and parentoffspring regression in Musa germplasm with intergeneration genome size polymorphism |
| title_full | Additive relationships and parentoffspring regression in Musa germplasm with intergeneration genome size polymorphism |
| title_fullStr | Additive relationships and parentoffspring regression in Musa germplasm with intergeneration genome size polymorphism |
| title_full_unstemmed | Additive relationships and parentoffspring regression in Musa germplasm with intergeneration genome size polymorphism |
| title_short | Additive relationships and parentoffspring regression in Musa germplasm with intergeneration genome size polymorphism |
| title_sort | additive relationships and parentoffspring regression in musa germplasm with intergeneration genome size polymorphism |
| topic | gametes additive relationships heritability hybrids musa breeding ploidy polymorphism polysomic inheritance |
| url | https://hdl.handle.net/10568/79837 |
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