Towards a practical participatory plant-breeding strategy in predominantly self-pollinated crops
There is a limit to the capacity of any breeding program, and the more crosses that are made, the, smaller The size of each cross. The theory of the optimum number of crosses in inbreeding crops is bristly Reviewed. The theory is unsatisfactory in determining the optimum number of crosses, but model...
| Main Authors: | , , |
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| Format: | Book Chapter |
| Language: | Inglés |
| Published: |
CGIAR Systemwide Program on Participatory Research and Gender Analysis for Technology Development and Institutional Innovation
2001
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/81897 |
| _version_ | 1855542647155851264 |
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| author | Witcombe, John R. Subedi, Madu Joshi, Krishna D. |
| author_browse | Joshi, Krishna D. Subedi, Madu Witcombe, John R. |
| author_facet | Witcombe, John R. Subedi, Madu Joshi, Krishna D. |
| author_sort | Witcombe, John R. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | There is a limit to the capacity of any breeding program, and the more crosses that are made, the, smaller
The size of each cross. The theory of the optimum number of crosses in inbreeding crops is bristly Reviewed. The theory is unsatisfactory in determining the optimum number of crosses, but models that Take linkage into account show that very large populations are needed to recover specified genotypes. Hence, one possible strategy is to select a small number of crosses that are considered favorable and Produce large populations from them. This strategy is ideality suited lo Ihe particular constrains and advantages of participatory plant breeding (PPB). When a breeding program is based on few crosses. The
Choice of parents is crucial; and farmer participatory methods are highly effective in narrowing the choice, Modified bulk-population breeding methods are desirable strategies in the participatory plant breeding of self-pollinating crops when combined with low-cross-number. Approach, and a participatory breeding program for rice in Nepal is described. |
| format | Book Chapter |
| id | CGSpace81897 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2001 |
| publishDateRange | 2001 |
| publishDateSort | 2001 |
| publisher | CGIAR Systemwide Program on Participatory Research and Gender Analysis for Technology Development and Institutional Innovation |
| publisherStr | CGIAR Systemwide Program on Participatory Research and Gender Analysis for Technology Development and Institutional Innovation |
| record_format | dspace |
| spelling | CGSpace818972023-01-13T18:24:12Z Towards a practical participatory plant-breeding strategy in predominantly self-pollinated crops Witcombe, John R. Subedi, Madu Joshi, Krishna D. oryza sativa rice breeding hybridization fitomejoramiento hibridación There is a limit to the capacity of any breeding program, and the more crosses that are made, the, smaller The size of each cross. The theory of the optimum number of crosses in inbreeding crops is bristly Reviewed. The theory is unsatisfactory in determining the optimum number of crosses, but models that Take linkage into account show that very large populations are needed to recover specified genotypes. Hence, one possible strategy is to select a small number of crosses that are considered favorable and Produce large populations from them. This strategy is ideality suited lo Ihe particular constrains and advantages of participatory plant breeding (PPB). When a breeding program is based on few crosses. The Choice of parents is crucial; and farmer participatory methods are highly effective in narrowing the choice, Modified bulk-population breeding methods are desirable strategies in the participatory plant breeding of self-pollinating crops when combined with low-cross-number. Approach, and a participatory breeding program for rice in Nepal is described. 2001 2017-06-20T08:59:50Z 2017-06-20T08:59:50Z Book Chapter https://hdl.handle.net/10568/81897 en Open Access CGIAR Systemwide Program on Participatory Research and Gender Analysis for Technology Development and Institutional Innovation Witcombe, John R.; Subedi, Madu; Joshi, Krishna D.; Witcombe, John R.. 2001. Towards a practical participatory plant-breeding strategy in predominantly self-pollinated crops. In: An exchange of experiences from South and South East Asia: Proceedings of the international symposium on Participatory plant breeding and participatory plant genetic resources enhancement, Pokhara, Nepal, 1-5 May 2000. Cali: CGIAR Program for Participatory Research and Gender Analysis: 243-248. |
| spellingShingle | oryza sativa rice breeding hybridization fitomejoramiento hibridación Witcombe, John R. Subedi, Madu Joshi, Krishna D. Towards a practical participatory plant-breeding strategy in predominantly self-pollinated crops |
| title | Towards a practical participatory plant-breeding strategy in predominantly self-pollinated crops |
| title_full | Towards a practical participatory plant-breeding strategy in predominantly self-pollinated crops |
| title_fullStr | Towards a practical participatory plant-breeding strategy in predominantly self-pollinated crops |
| title_full_unstemmed | Towards a practical participatory plant-breeding strategy in predominantly self-pollinated crops |
| title_short | Towards a practical participatory plant-breeding strategy in predominantly self-pollinated crops |
| title_sort | towards a practical participatory plant breeding strategy in predominantly self pollinated crops |
| topic | oryza sativa rice breeding hybridization fitomejoramiento hibridación |
| url | https://hdl.handle.net/10568/81897 |
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