Testing alternative methods of varietal identification using DNA fingerprinting: results of pilot studies in Ghana and Zambia
Varietal adoption based on household surveys has mostly relied on farmers’ response to varietal identification. This method can give biased estimates if farmers are unable to identify improved varieties as a group or by name, or give names that do not match with the released variety list. To tack...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Informe técnico |
| Language: | Inglés |
| Published: |
Michigan State University
2016
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/79460 |
| _version_ | 1855537430949527552 |
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| author | Maredia, Mywish K. Reyes, B.A. Manu-Aduening, J.A. Dankyi, Ansong A. Hamazakaza, P. Muimui, Kennedy K. Rabbi, Ismail Y. Kulakow, Peter A. Parkes, Elizabeth Y. Abdoulaye, Tahirou Katungi, E. Raatz, Bodo |
| author_browse | Abdoulaye, Tahirou Dankyi, Ansong A. Hamazakaza, P. Katungi, E. Kulakow, Peter A. Manu-Aduening, J.A. Maredia, Mywish K. Muimui, Kennedy K. Parkes, Elizabeth Y. Raatz, Bodo Rabbi, Ismail Y. Reyes, B.A. |
| author_facet | Maredia, Mywish K. Reyes, B.A. Manu-Aduening, J.A. Dankyi, Ansong A. Hamazakaza, P. Muimui, Kennedy K. Rabbi, Ismail Y. Kulakow, Peter A. Parkes, Elizabeth Y. Abdoulaye, Tahirou Katungi, E. Raatz, Bodo |
| author_sort | Maredia, Mywish K. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Varietal adoption based on household surveys has mostly relied on farmers’ response to
varietal identification. This method can give biased estimates if farmers are unable to identify
improved varieties as a group or by name, or give names that do not match with the released
variety list. To tackle these potential problems other innovative methods have been suggested
that require time and resource intensive data collection such as including follow-up questions
in the survey instrument to gather information on varietal traits, visiting the field to observe
plant characteristics, or collecting sample materials (i.e., photos, seeds/plant tissues) from the
farmers for later verification by experts. However, the accuracy of these different methods for
identifying varieties grown by farmers to be able to estimate variety specific adoption is
unknown.
This paper reports the results of two pilot studies conducted in Ghana and Zambia to test and
validate some of these different approaches of collecting variety-specific adoption data
against the benchmark of DNA-fingerprinting to determine which method can accurately
identify released varieties used by farmers. Results suggest large variations in the estimates of
varietal adoption obtained by these different methods compared to DNA fingerprinting
results. Results also point to potential challenges of these alternative methods of varietal
identification, including DNA fingerprinting in a developing country setting. The
implications of these results on future adoption and impact studies are discussed. |
| format | Informe técnico |
| id | CGSpace79460 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Michigan State University |
| publisherStr | Michigan State University |
| record_format | dspace |
| spelling | CGSpace794602024-03-06T10:16:43Z Testing alternative methods of varietal identification using DNA fingerprinting: results of pilot studies in Ghana and Zambia Maredia, Mywish K. Reyes, B.A. Manu-Aduening, J.A. Dankyi, Ansong A. Hamazakaza, P. Muimui, Kennedy K. Rabbi, Ismail Y. Kulakow, Peter A. Parkes, Elizabeth Y. Abdoulaye, Tahirou Katungi, E. Raatz, Bodo cassava beans dna fingerprinting grain legumes Varietal adoption based on household surveys has mostly relied on farmers’ response to varietal identification. This method can give biased estimates if farmers are unable to identify improved varieties as a group or by name, or give names that do not match with the released variety list. To tackle these potential problems other innovative methods have been suggested that require time and resource intensive data collection such as including follow-up questions in the survey instrument to gather information on varietal traits, visiting the field to observe plant characteristics, or collecting sample materials (i.e., photos, seeds/plant tissues) from the farmers for later verification by experts. However, the accuracy of these different methods for identifying varieties grown by farmers to be able to estimate variety specific adoption is unknown. This paper reports the results of two pilot studies conducted in Ghana and Zambia to test and validate some of these different approaches of collecting variety-specific adoption data against the benchmark of DNA-fingerprinting to determine which method can accurately identify released varieties used by farmers. Results suggest large variations in the estimates of varietal adoption obtained by these different methods compared to DNA fingerprinting results. Results also point to potential challenges of these alternative methods of varietal identification, including DNA fingerprinting in a developing country setting. The implications of these results on future adoption and impact studies are discussed. 2016-10 2017-02-01T12:21:24Z 2017-02-01T12:21:24Z Report https://hdl.handle.net/10568/79460 en Limited Access Michigan State University Maredia, M.K., Reyes, B.A., Manu-Aduening, J., Dankyi, A., Hamazakaza, P., Muimui, K., ... & Abdoulaye, T. (2016). Testing alternative methods of varietal identification using DNA fingerprinting: results of pilot studies in Ghana and Zambia (46 p.). Michigan: Michigan State University. |
| spellingShingle | cassava beans dna fingerprinting grain legumes Maredia, Mywish K. Reyes, B.A. Manu-Aduening, J.A. Dankyi, Ansong A. Hamazakaza, P. Muimui, Kennedy K. Rabbi, Ismail Y. Kulakow, Peter A. Parkes, Elizabeth Y. Abdoulaye, Tahirou Katungi, E. Raatz, Bodo Testing alternative methods of varietal identification using DNA fingerprinting: results of pilot studies in Ghana and Zambia |
| title | Testing alternative methods of varietal identification using DNA fingerprinting: results of pilot studies in Ghana and Zambia |
| title_full | Testing alternative methods of varietal identification using DNA fingerprinting: results of pilot studies in Ghana and Zambia |
| title_fullStr | Testing alternative methods of varietal identification using DNA fingerprinting: results of pilot studies in Ghana and Zambia |
| title_full_unstemmed | Testing alternative methods of varietal identification using DNA fingerprinting: results of pilot studies in Ghana and Zambia |
| title_short | Testing alternative methods of varietal identification using DNA fingerprinting: results of pilot studies in Ghana and Zambia |
| title_sort | testing alternative methods of varietal identification using dna fingerprinting results of pilot studies in ghana and zambia |
| topic | cassava beans dna fingerprinting grain legumes |
| url | https://hdl.handle.net/10568/79460 |
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