The yam nematode (Scutellonema bradys), a potential threat to potato (Solanum tuberosum) production in West Africa
Potato (Solanum tuberosum) production in Africa is rapidly expanding and becoming increasingly important. As its geographical production range broadens, so does its potential to host new pests and diseases. Following the discovery that potato can be affected by Scutellonema bradys, further studies w...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2011
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/83233 |
| _version_ | 1855543234754772992 |
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| author | Coyne, Danny L. Akpheokhai, L.I. Adeniran, A.F. |
| author_browse | Adeniran, A.F. Akpheokhai, L.I. Coyne, Danny L. |
| author_facet | Coyne, Danny L. Akpheokhai, L.I. Adeniran, A.F. |
| author_sort | Coyne, Danny L. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Potato (Solanum tuberosum) production in Africa is rapidly expanding and becoming increasingly important. As its geographical production range broadens, so does its potential to host new pests and diseases. Following the discovery that potato can be affected by Scutellonema bradys, further studies were undertaken to assess its potential pathogenicity on potato under screenhouse and field conditions, and on marketed tubers. Potato plants inoculated with S. bradys produced tubers with substantial cracking and evident tuber rot, compared with tubers from uninoculated plants. Symptoms of nematode infection on tubers included a scaly appearance, surface cracking as well as deeper tissue cracks, distortions, and darkened surface patches. In most cases these patches were related to sub-surface rot. Nematodes were recovered from the soil, roots and tubers of inoculated plants. Eight weeks after inoculation, the reproduction factor of the nematode was greatest (2·0) at the lowest inoculation rate assessed (1000 nematodes per 2·5-L pot) and least (0·4) at the highest inoculation rate (5000 nematodes per pot). In the screenhouse, potato tuber weights were low and mostly unaffected by nematode inoculation rate, except at 5000 nematodes per pot. In the field, non-inoculated plants yielded over nine times more tubers than plants inoculated with 2000 S. bradys. Low densities of S. bradys were also recovered from 10 of 15 (67%) samples collected from market stalls, indicating field infection. This study confirms that potato can host and be damaged by S. bradys, raising its prospect as a likely significant biotic constraint to the crop. |
| format | Journal Article |
| id | CGSpace83233 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2011 |
| publishDateRange | 2011 |
| publishDateSort | 2011 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace832332023-07-03T16:59:25Z The yam nematode (Scutellonema bradys), a potential threat to potato (Solanum tuberosum) production in West Africa Coyne, Danny L. Akpheokhai, L.I. Adeniran, A.F. pathogenicity plant parasitic namatodes pratylenchus yams yield loss tuber rot potato production Potato (Solanum tuberosum) production in Africa is rapidly expanding and becoming increasingly important. As its geographical production range broadens, so does its potential to host new pests and diseases. Following the discovery that potato can be affected by Scutellonema bradys, further studies were undertaken to assess its potential pathogenicity on potato under screenhouse and field conditions, and on marketed tubers. Potato plants inoculated with S. bradys produced tubers with substantial cracking and evident tuber rot, compared with tubers from uninoculated plants. Symptoms of nematode infection on tubers included a scaly appearance, surface cracking as well as deeper tissue cracks, distortions, and darkened surface patches. In most cases these patches were related to sub-surface rot. Nematodes were recovered from the soil, roots and tubers of inoculated plants. Eight weeks after inoculation, the reproduction factor of the nematode was greatest (2·0) at the lowest inoculation rate assessed (1000 nematodes per 2·5-L pot) and least (0·4) at the highest inoculation rate (5000 nematodes per pot). In the screenhouse, potato tuber weights were low and mostly unaffected by nematode inoculation rate, except at 5000 nematodes per pot. In the field, non-inoculated plants yielded over nine times more tubers than plants inoculated with 2000 S. bradys. Low densities of S. bradys were also recovered from 10 of 15 (67%) samples collected from market stalls, indicating field infection. This study confirms that potato can host and be damaged by S. bradys, raising its prospect as a likely significant biotic constraint to the crop. 2011-10 2017-08-25T14:45:58Z 2017-08-25T14:45:58Z Journal Article https://hdl.handle.net/10568/83233 en Limited Access Wiley Coyne, D.L., Akpheokhai, L.I. & Adeniran, A.F. (2011). The yam nematode (Scutellonema bradys), a potential threat to potato (Solanum tuberosum) production in West Africa. Plant Pathology, 60(5), 992-997. |
| spellingShingle | pathogenicity plant parasitic namatodes pratylenchus yams yield loss tuber rot potato production Coyne, Danny L. Akpheokhai, L.I. Adeniran, A.F. The yam nematode (Scutellonema bradys), a potential threat to potato (Solanum tuberosum) production in West Africa |
| title | The yam nematode (Scutellonema bradys), a potential threat to potato (Solanum tuberosum) production in West Africa |
| title_full | The yam nematode (Scutellonema bradys), a potential threat to potato (Solanum tuberosum) production in West Africa |
| title_fullStr | The yam nematode (Scutellonema bradys), a potential threat to potato (Solanum tuberosum) production in West Africa |
| title_full_unstemmed | The yam nematode (Scutellonema bradys), a potential threat to potato (Solanum tuberosum) production in West Africa |
| title_short | The yam nematode (Scutellonema bradys), a potential threat to potato (Solanum tuberosum) production in West Africa |
| title_sort | yam nematode scutellonema bradys a potential threat to potato solanum tuberosum production in west africa |
| topic | pathogenicity plant parasitic namatodes pratylenchus yams yield loss tuber rot potato production |
| url | https://hdl.handle.net/10568/83233 |
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