Approaches and advantages of increased crop genetic diversity in the fields
Field trials of rice and bean dynamic mixtures were carried out in low input and hill farming systems of Nepal from 2019 to 2021 to improve productivity and resilience. The rice trials were conducted in two locations (Jumla and Lamjung) and those on bean in Jumla, using a randomized complete block d...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
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MDPI
2023
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/130672 |
| _version_ | 1855543727673573376 |
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| author | Joshi, Bal Krishna Ghimire, Krishna Hari Neupane, Shree Prasad Gauchan, Devendra Mengistu, Dejene Kassahun |
| author_browse | Gauchan, Devendra Ghimire, Krishna Hari Joshi, Bal Krishna Mengistu, Dejene Kassahun Neupane, Shree Prasad |
| author_facet | Joshi, Bal Krishna Ghimire, Krishna Hari Neupane, Shree Prasad Gauchan, Devendra Mengistu, Dejene Kassahun |
| author_sort | Joshi, Bal Krishna |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Field trials of rice and bean dynamic mixtures were carried out in low input and hill farming systems of Nepal from 2019 to 2021 to improve productivity and resilience. The rice trials were conducted in two locations (Jumla and Lamjung) and those on bean in Jumla, using a randomized complete block design with three replications. Dynamic mixtures were constructed from landraces, improved varieties and breeding lines for both crops. A total of 48 bean entries were used in Jumla, whereas 56 and 66 rice entries were used to make location-specific dynamic mixtures in Lamjung and Jumla, respectively. They were formed by mixing diverse varieties as a strategy to maintain a broad genetic base. Farmers (men and women) and technicians selected from the most complex mixture and the selections were added to the trials starting from second year. In rice, some mixtures and selections from the mixtures gave grain yield comparable to the improved check and higher than the local checks. In the case of bean, differences between entries were not significant but some of the selections received a high preference score. Overall, the dynamic mixtures appear as a reliable material for sustainable increase in yield in the low input and hill farming system of Nepal. |
| format | Journal Article |
| id | CGSpace130672 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | CGSpace1306722025-12-08T10:29:22Z Approaches and advantages of increased crop genetic diversity in the fields Joshi, Bal Krishna Ghimire, Krishna Hari Neupane, Shree Prasad Gauchan, Devendra Mengistu, Dejene Kassahun seed systems biodiversity crops on-farm conservation plant breeding participatory research landraces resilience Field trials of rice and bean dynamic mixtures were carried out in low input and hill farming systems of Nepal from 2019 to 2021 to improve productivity and resilience. The rice trials were conducted in two locations (Jumla and Lamjung) and those on bean in Jumla, using a randomized complete block design with three replications. Dynamic mixtures were constructed from landraces, improved varieties and breeding lines for both crops. A total of 48 bean entries were used in Jumla, whereas 56 and 66 rice entries were used to make location-specific dynamic mixtures in Lamjung and Jumla, respectively. They were formed by mixing diverse varieties as a strategy to maintain a broad genetic base. Farmers (men and women) and technicians selected from the most complex mixture and the selections were added to the trials starting from second year. In rice, some mixtures and selections from the mixtures gave grain yield comparable to the improved check and higher than the local checks. In the case of bean, differences between entries were not significant but some of the selections received a high preference score. Overall, the dynamic mixtures appear as a reliable material for sustainable increase in yield in the low input and hill farming system of Nepal. 2023-04 2023-06-07T14:38:21Z 2023-06-07T14:38:21Z Journal Article https://hdl.handle.net/10568/130672 en Open Access application/pdf MDPI Joshi, B.K.; Ghimire, K.H.; Neupane, S.P.; Gauchan, D.; Mengistu, D.K. (2023) Approaches and advantages of increased crop genetic diversity in the fields. Diversity 15(5): 603. ISSN: 1424-2818 |
| spellingShingle | seed systems biodiversity crops on-farm conservation plant breeding participatory research landraces resilience Joshi, Bal Krishna Ghimire, Krishna Hari Neupane, Shree Prasad Gauchan, Devendra Mengistu, Dejene Kassahun Approaches and advantages of increased crop genetic diversity in the fields |
| title | Approaches and advantages of increased crop genetic diversity in the fields |
| title_full | Approaches and advantages of increased crop genetic diversity in the fields |
| title_fullStr | Approaches and advantages of increased crop genetic diversity in the fields |
| title_full_unstemmed | Approaches and advantages of increased crop genetic diversity in the fields |
| title_short | Approaches and advantages of increased crop genetic diversity in the fields |
| title_sort | approaches and advantages of increased crop genetic diversity in the fields |
| topic | seed systems biodiversity crops on-farm conservation plant breeding participatory research landraces resilience |
| url | https://hdl.handle.net/10568/130672 |
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