Inbreeding enhances field resistance to cassava brown streak viruses
Cassava brown streak disease (CBSD) is currently the major disease affecting cassava production in Eastern and Southern Africa. Breeding for resistance has been hampered by a lack of sources of resistance and the complexity of CBSD. This study was initiated to assess the possibility of exploiting in...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Academic Journals
2016
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/76361 |
| _version_ | 1855533683144916992 |
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| author | Tadeo, K. Vincent, K. Yona, B. Robert, K. Ferguson, Morag E. |
| author_browse | Ferguson, Morag E. Robert, K. Tadeo, K. Vincent, K. Yona, B. |
| author_facet | Tadeo, K. Vincent, K. Yona, B. Robert, K. Ferguson, Morag E. |
| author_sort | Tadeo, K. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Cassava brown streak disease (CBSD) is currently the major disease affecting cassava production in Eastern and Southern Africa. Breeding for resistance has been hampered by a lack of sources of resistance and the complexity of CBSD. This study was initiated to assess the possibility of exploiting inbreeding, as a strategy for generating new sources of resistance to CBSD. This was based on the premise that inbreeding increases the additive variance upon which selection for desirable phenotypes can be made. Eight cassava progenitors (S0): Namikonga, 182/006661, Kigoma Red, Tz/130, Tz/140, 130040, 0040 and 100142 were selfed for one generation to produce the first inbred generation (S1). The S1 progenies generated were evaluated for two seasons (seedling and clonal evaluation trial) in a high CBSD pressure area. Promising clones were re-evaluated to confirm their CBSD reaction status. Results obtained showed that within each family, a few S1 inbreds (1-15) had higher levels of resistance compared to the S0 progenitors with the highest number observed in Tz/130. It is possible therefore to get transgressive progenies through inbreeding. |
| format | Journal Article |
| id | CGSpace76361 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Academic Journals |
| publisherStr | Academic Journals |
| record_format | dspace |
| spelling | CGSpace763612025-11-11T10:39:31Z Inbreeding enhances field resistance to cassava brown streak viruses Tadeo, K. Vincent, K. Yona, B. Robert, K. Ferguson, Morag E. cassava inbreeding inbreeding depression Cassava brown streak disease (CBSD) is currently the major disease affecting cassava production in Eastern and Southern Africa. Breeding for resistance has been hampered by a lack of sources of resistance and the complexity of CBSD. This study was initiated to assess the possibility of exploiting inbreeding, as a strategy for generating new sources of resistance to CBSD. This was based on the premise that inbreeding increases the additive variance upon which selection for desirable phenotypes can be made. Eight cassava progenitors (S0): Namikonga, 182/006661, Kigoma Red, Tz/130, Tz/140, 130040, 0040 and 100142 were selfed for one generation to produce the first inbred generation (S1). The S1 progenies generated were evaluated for two seasons (seedling and clonal evaluation trial) in a high CBSD pressure area. Promising clones were re-evaluated to confirm their CBSD reaction status. Results obtained showed that within each family, a few S1 inbreds (1-15) had higher levels of resistance compared to the S0 progenitors with the highest number observed in Tz/130. It is possible therefore to get transgressive progenies through inbreeding. 2016-08-31 2016-08-09T12:52:40Z 2016-08-09T12:52:40Z Journal Article https://hdl.handle.net/10568/76361 en Open Access application/pdf Academic Journals Tadeo, K., Vincent, K., Yona, B., Robert, K. & Ferguson, M. (2016). Inbreeding enhances field resistance to cassava brown streak viruses. Journal of Plant Breeding and Crop Science, 8(8), 138-149. |
| spellingShingle | cassava inbreeding inbreeding depression Tadeo, K. Vincent, K. Yona, B. Robert, K. Ferguson, Morag E. Inbreeding enhances field resistance to cassava brown streak viruses |
| title | Inbreeding enhances field resistance to cassava brown streak viruses |
| title_full | Inbreeding enhances field resistance to cassava brown streak viruses |
| title_fullStr | Inbreeding enhances field resistance to cassava brown streak viruses |
| title_full_unstemmed | Inbreeding enhances field resistance to cassava brown streak viruses |
| title_short | Inbreeding enhances field resistance to cassava brown streak viruses |
| title_sort | inbreeding enhances field resistance to cassava brown streak viruses |
| topic | cassava inbreeding inbreeding depression |
| url | https://hdl.handle.net/10568/76361 |
| work_keys_str_mv | AT tadeok inbreedingenhancesfieldresistancetocassavabrownstreakviruses AT vincentk inbreedingenhancesfieldresistancetocassavabrownstreakviruses AT yonab inbreedingenhancesfieldresistancetocassavabrownstreakviruses AT robertk inbreedingenhancesfieldresistancetocassavabrownstreakviruses AT fergusonmorage inbreedingenhancesfieldresistancetocassavabrownstreakviruses |