Genetic Patterns of Common-Bean Seed Acquisition and Early-Stage Adoption Among Farmer Groups in Western Uganda
Widespread adoption of new varieties can be valuable, especially where improved agricultural production technologies are hard to access. However, as farmers adopt new varieties, in situ population structure and genetic diversity of their seed holdings can change drastically. Consequences of adoption...
| Autores principales: | , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Frontiers Media
2018
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/92823 |
| _version_ | 1855536821938683904 |
|---|---|
| author | Wilkus, Erin Lynn Berny Mier y Teran, Jorge Carlos Mukankusi, Clare Mugisha Gepts, Paul L. |
| author_browse | Berny Mier y Teran, Jorge Carlos Gepts, Paul L. Mukankusi, Clare Mugisha Wilkus, Erin Lynn |
| author_facet | Wilkus, Erin Lynn Berny Mier y Teran, Jorge Carlos Mukankusi, Clare Mugisha Gepts, Paul L. |
| author_sort | Wilkus, Erin Lynn |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Widespread adoption of new varieties can be valuable, especially where improved agricultural production technologies are hard to access. However, as farmers adopt new varieties, in situ population structure and genetic diversity of their seed holdings can change drastically. Consequences of adoption are still poorly understood due to a lack of crop genetic diversity assessments and detailed surveys of farmers' seed management practices. Common bean (Phaseolus vulgaris) is an excellent model for these types of studies, as it has a long history of cultivation among smallholder farmers, exhibits eco-geographic patterns of diversity (e.g., Andean vs. Mesoamerican gene-pools), and has been subjected to post-Columbian dispersal and recent introduction of improved cultivars. The Hoima district of western Uganda additionally provides an excellent social setting for evaluating consequences of adoption because access to improved varieties has varied across farmer groups in this production region. This study establishes a baseline understanding of the common bean diversity found among household producers in Uganda and compares the crop population structure, diversity and consequences of adoption of household producers with different adoption practices. Molecular diversity analysis, based on 4,955 single nucleotide polymorphism (SNP) markers, evaluated a total of 1,156 seed samples that included 196 household samples collected from household producers in the Hoima district, 19 breeder-selected varieties used in participatory breeding activities that had taken place prior to the study in the region, and a global bean germplasm collection. Households that had participated in regional participatory breeding efforts were more likely to adopt new varieties and, consequently, diversify their seed stocks than those that had not participated. Of the three farmer groups that participated in breeding efforts, households from the farmer group with the longest history of bean production were more likely to conserve “Seed Engufu”, a local “Calima”-type variety of the Andean bean gene pool, and, at the same time, introduce rare Mesoamerican gene pool varieties into household seed stocks. |
| format | Journal Article |
| id | CGSpace92823 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Frontiers Media |
| publisherStr | Frontiers Media |
| record_format | dspace |
| spelling | CGSpace928232025-03-13T09:45:08Z Genetic Patterns of Common-Bean Seed Acquisition and Early-Stage Adoption Among Farmer Groups in Western Uganda Wilkus, Erin Lynn Berny Mier y Teran, Jorge Carlos Mukankusi, Clare Mugisha Gepts, Paul L. phaseolus vulgaris l. common beans genetic diversity as resource diversidad genética como recurso population structure estructura de la población farmers associations asociaciones de agricultores Widespread adoption of new varieties can be valuable, especially where improved agricultural production technologies are hard to access. However, as farmers adopt new varieties, in situ population structure and genetic diversity of their seed holdings can change drastically. Consequences of adoption are still poorly understood due to a lack of crop genetic diversity assessments and detailed surveys of farmers' seed management practices. Common bean (Phaseolus vulgaris) is an excellent model for these types of studies, as it has a long history of cultivation among smallholder farmers, exhibits eco-geographic patterns of diversity (e.g., Andean vs. Mesoamerican gene-pools), and has been subjected to post-Columbian dispersal and recent introduction of improved cultivars. The Hoima district of western Uganda additionally provides an excellent social setting for evaluating consequences of adoption because access to improved varieties has varied across farmer groups in this production region. This study establishes a baseline understanding of the common bean diversity found among household producers in Uganda and compares the crop population structure, diversity and consequences of adoption of household producers with different adoption practices. Molecular diversity analysis, based on 4,955 single nucleotide polymorphism (SNP) markers, evaluated a total of 1,156 seed samples that included 196 household samples collected from household producers in the Hoima district, 19 breeder-selected varieties used in participatory breeding activities that had taken place prior to the study in the region, and a global bean germplasm collection. Households that had participated in regional participatory breeding efforts were more likely to adopt new varieties and, consequently, diversify their seed stocks than those that had not participated. Of the three farmer groups that participated in breeding efforts, households from the farmer group with the longest history of bean production were more likely to conserve “Seed Engufu”, a local “Calima”-type variety of the Andean bean gene pool, and, at the same time, introduce rare Mesoamerican gene pool varieties into household seed stocks. 2018-04 2018-05-21T16:09:45Z 2018-05-21T16:09:45Z Journal Article https://hdl.handle.net/10568/92823 en Open Access Frontiers Media Wilkus, Erin L, Berny Mier y Teran, Jorge C, Mukankusi, Clare M, Gepts, Paul .(2018). Genetic Patterns of Common-Bean Seed Acquisition and Early-Stage Adoption Among Farmer Groups in Western Uganda. Frontiers in Plant Science, 9:586. |
| spellingShingle | phaseolus vulgaris l. common beans genetic diversity as resource diversidad genética como recurso population structure estructura de la población farmers associations asociaciones de agricultores Wilkus, Erin Lynn Berny Mier y Teran, Jorge Carlos Mukankusi, Clare Mugisha Gepts, Paul L. Genetic Patterns of Common-Bean Seed Acquisition and Early-Stage Adoption Among Farmer Groups in Western Uganda |
| title | Genetic Patterns of Common-Bean Seed Acquisition and Early-Stage Adoption Among Farmer Groups in Western Uganda |
| title_full | Genetic Patterns of Common-Bean Seed Acquisition and Early-Stage Adoption Among Farmer Groups in Western Uganda |
| title_fullStr | Genetic Patterns of Common-Bean Seed Acquisition and Early-Stage Adoption Among Farmer Groups in Western Uganda |
| title_full_unstemmed | Genetic Patterns of Common-Bean Seed Acquisition and Early-Stage Adoption Among Farmer Groups in Western Uganda |
| title_short | Genetic Patterns of Common-Bean Seed Acquisition and Early-Stage Adoption Among Farmer Groups in Western Uganda |
| title_sort | genetic patterns of common bean seed acquisition and early stage adoption among farmer groups in western uganda |
| topic | phaseolus vulgaris l. common beans genetic diversity as resource diversidad genética como recurso population structure estructura de la población farmers associations asociaciones de agricultores |
| url | https://hdl.handle.net/10568/92823 |
| work_keys_str_mv | AT wilkuserinlynn geneticpatternsofcommonbeanseedacquisitionandearlystageadoptionamongfarmergroupsinwesternuganda AT bernymieryteranjorgecarlos geneticpatternsofcommonbeanseedacquisitionandearlystageadoptionamongfarmergroupsinwesternuganda AT mukankusiclaremugisha geneticpatternsofcommonbeanseedacquisitionandearlystageadoptionamongfarmergroupsinwesternuganda AT geptspaull geneticpatternsofcommonbeanseedacquisitionandearlystageadoptionamongfarmergroupsinwesternuganda |