Genomic selection in tropical forage grasses: Current status and future applications
The world population is expected to be larger and wealthier over the next few decades and will require more animal products, such as milk and beef. Tropical regions have great potential to meet this growing global demand, where pasturelands play a major role in supporting increased animal production...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Frontiers Media
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/113737 |
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| author | Simeão, R.M. Resende, M.D.V. Alves, R.S. Pessoa-Filho, M. Azevedo, A.L.S. Jones, Christopher S. Pereira, J.F. Machado, J.C. |
| author_browse | Alves, R.S. Azevedo, A.L.S. Jones, Christopher S. Machado, J.C. Pereira, J.F. Pessoa-Filho, M. Resende, M.D.V. Simeão, R.M. |
| author_facet | Simeão, R.M. Resende, M.D.V. Alves, R.S. Pessoa-Filho, M. Azevedo, A.L.S. Jones, Christopher S. Pereira, J.F. Machado, J.C. |
| author_sort | Simeão, R.M. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The world population is expected to be larger and wealthier over the next few decades and will require more animal products, such as milk and beef. Tropical regions have great potential to meet this growing global demand, where pasturelands play a major role in supporting increased animal production. Better forage is required in consonance with improved sustainability as the planted area should not increase and larger areas cultivated with one or a few forage species should be avoided. Although, conventional tropical forage breeding has successfully released well-adapted and high-yielding cultivars over the last few decades, genetic gains from these programs have been low in view of the growing food demand worldwide. To guarantee their future impact on livestock production, breeding programs should leverage genotyping, phenotyping, and envirotyping strategies to increase genetic gains. Genomic selection (GS) and genome-wide association studies play a primary role in this process, with the advantage of increasing genetic gain due to greater selection accuracy, reduced cycle time, and increased number of individuals that can be evaluated. This strategy provides solutions to bottlenecks faced by conventional breeding methods, including long breeding cycles and difficulties to evaluate complex traits. Initial results from implementing GS in tropical forage grasses (TFGs) are promising with notable improvements over phenotypic selection alone. However, the practical impact of GS in TFG breeding programs remains unclear. The development of appropriately sized training populations is essential for the evaluation and validation of selection markers based on estimated breeding values. Large panels of single-nucleotide polymorphism markers in different tropical forage species are required for multiple application targets at a reduced cost. In this context, this review highlights the current challenges, achievements, availability, and development of genomic resources and statistical methods for the implementation of GS in TFGs. Additionally, the prediction accuracies from recent experiments and the potential to harness diversity from genebanks are discussed. Although, GS in TFGs is still incipient, the advances in genomic tools and statistical models will speed up its implementation in the foreseeable future. All TFG breeding programs should be prepared for these changes. |
| format | Journal Article |
| id | CGSpace113737 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Frontiers Media |
| publisherStr | Frontiers Media |
| record_format | dspace |
| spelling | CGSpace1137372024-05-01T08:18:44Z Genomic selection in tropical forage grasses: Current status and future applications Simeão, R.M. Resende, M.D.V. Alves, R.S. Pessoa-Filho, M. Azevedo, A.L.S. Jones, Christopher S. Pereira, J.F. Machado, J.C. grasses forage livestock animal feeding plant genetics The world population is expected to be larger and wealthier over the next few decades and will require more animal products, such as milk and beef. Tropical regions have great potential to meet this growing global demand, where pasturelands play a major role in supporting increased animal production. Better forage is required in consonance with improved sustainability as the planted area should not increase and larger areas cultivated with one or a few forage species should be avoided. Although, conventional tropical forage breeding has successfully released well-adapted and high-yielding cultivars over the last few decades, genetic gains from these programs have been low in view of the growing food demand worldwide. To guarantee their future impact on livestock production, breeding programs should leverage genotyping, phenotyping, and envirotyping strategies to increase genetic gains. Genomic selection (GS) and genome-wide association studies play a primary role in this process, with the advantage of increasing genetic gain due to greater selection accuracy, reduced cycle time, and increased number of individuals that can be evaluated. This strategy provides solutions to bottlenecks faced by conventional breeding methods, including long breeding cycles and difficulties to evaluate complex traits. Initial results from implementing GS in tropical forage grasses (TFGs) are promising with notable improvements over phenotypic selection alone. However, the practical impact of GS in TFG breeding programs remains unclear. The development of appropriately sized training populations is essential for the evaluation and validation of selection markers based on estimated breeding values. Large panels of single-nucleotide polymorphism markers in different tropical forage species are required for multiple application targets at a reduced cost. In this context, this review highlights the current challenges, achievements, availability, and development of genomic resources and statistical methods for the implementation of GS in TFGs. Additionally, the prediction accuracies from recent experiments and the potential to harness diversity from genebanks are discussed. Although, GS in TFGs is still incipient, the advances in genomic tools and statistical models will speed up its implementation in the foreseeable future. All TFG breeding programs should be prepared for these changes. 2021-04-30 2021-05-19T08:38:38Z 2021-05-19T08:38:38Z Journal Article https://hdl.handle.net/10568/113737 en Open Access Frontiers Media Simeão, R.M., Resende, M.D.V., Alves, R.S., Pessoa-Filho, M., Azevedo, A.L.S., Jones, C.S., Pereira, J.F. and Machado, J.C. 2021. Genomic selection in tropical forage grasses: Current status and future applications. Frontiers in Plant Science 12:665195. |
| spellingShingle | grasses forage livestock animal feeding plant genetics Simeão, R.M. Resende, M.D.V. Alves, R.S. Pessoa-Filho, M. Azevedo, A.L.S. Jones, Christopher S. Pereira, J.F. Machado, J.C. Genomic selection in tropical forage grasses: Current status and future applications |
| title | Genomic selection in tropical forage grasses: Current status and future applications |
| title_full | Genomic selection in tropical forage grasses: Current status and future applications |
| title_fullStr | Genomic selection in tropical forage grasses: Current status and future applications |
| title_full_unstemmed | Genomic selection in tropical forage grasses: Current status and future applications |
| title_short | Genomic selection in tropical forage grasses: Current status and future applications |
| title_sort | genomic selection in tropical forage grasses current status and future applications |
| topic | grasses forage livestock animal feeding plant genetics |
| url | https://hdl.handle.net/10568/113737 |
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