Distribution and virulence of fungal species isolated from yam (Dioscorea spp.) tubers in three agroecological zones of Nigeria
Field surveys were conducted in 2012 and 2013 to evaluate the distribution and virulence of fungal isolates associated with tuber rot disease among yam (Dioscorea spp.) producing agroecological zones (AEZs) of Nigeria. A total of 70 and 66 farmers’ fields were surveyed in 2012 and 2013, respectively...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Informa UK Limited
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/102390 |
| _version_ | 1855532624633659392 |
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| author | Dania, V.O. Fadina, O.O. Ayodele, M. Kumar, P. Lava |
| author_browse | Ayodele, M. Dania, V.O. Fadina, O.O. Kumar, P. Lava |
| author_facet | Dania, V.O. Fadina, O.O. Ayodele, M. Kumar, P. Lava |
| author_sort | Dania, V.O. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Field surveys were conducted in 2012 and 2013 to evaluate the distribution and virulence of fungal isolates associated with tuber rot disease among yam (Dioscorea spp.) producing agroecological zones (AEZs) of Nigeria. A total of 70 and 66 farmers’ fields were surveyed in 2012 and 2013, respectively among three yam species, Dioscorea rotundata, D. alata and D. cayenensis. Fifteen rotted samples were randomly collected per each yam species in fourteen districts across the humid rainforest (HF), the derived savanna (DS) and the southern Guinea savanna (SGS) agroecologies. Twenty-one fungal species were isolated in the HF, 18 species in the DS and 16 in the SGS. The highest rot severity was in HF agroecology in the D. rotundata which varied from 27.2% to 65.7% in 2012 and from 21.1 to 57.4% in 2013, while the SGS agroecology had the least severity. Lasiodiplodia theobromae was the most virulent pathogen with lesion diameter of 26.8–42.1 mm at 14 days after inoculation. Findings provide baseline information for the formulation of management strategies for yam tuber rot disease in Nigeria. |
| format | Journal Article |
| id | CGSpace102390 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Informa UK Limited |
| publisherStr | Informa UK Limited |
| record_format | dspace |
| spelling | CGSpace1023902024-05-01T08:18:32Z Distribution and virulence of fungal species isolated from yam (Dioscorea spp.) tubers in three agroecological zones of Nigeria Dania, V.O. Fadina, O.O. Ayodele, M. Kumar, P. Lava lesions pathogens field experiments yams nigeria dioscorea rotundata agroecology virulence Field surveys were conducted in 2012 and 2013 to evaluate the distribution and virulence of fungal isolates associated with tuber rot disease among yam (Dioscorea spp.) producing agroecological zones (AEZs) of Nigeria. A total of 70 and 66 farmers’ fields were surveyed in 2012 and 2013, respectively among three yam species, Dioscorea rotundata, D. alata and D. cayenensis. Fifteen rotted samples were randomly collected per each yam species in fourteen districts across the humid rainforest (HF), the derived savanna (DS) and the southern Guinea savanna (SGS) agroecologies. Twenty-one fungal species were isolated in the HF, 18 species in the DS and 16 in the SGS. The highest rot severity was in HF agroecology in the D. rotundata which varied from 27.2% to 65.7% in 2012 and from 21.1 to 57.4% in 2013, while the SGS agroecology had the least severity. Lasiodiplodia theobromae was the most virulent pathogen with lesion diameter of 26.8–42.1 mm at 14 days after inoculation. Findings provide baseline information for the formulation of management strategies for yam tuber rot disease in Nigeria. 2020-07-02 2019-07-31T13:43:53Z 2019-07-31T13:43:53Z Journal Article https://hdl.handle.net/10568/102390 en Limited Access Informa UK Limited Dania, V.O., Fadina, O.O., Ayodele, M. & Kumar, P.L. (2019). Distribution and virulence of fungal species isolated from yam (Dioscorea spp.) tubers in three agroecological zones of Nigeria. International Journal of Pest Management, 1-10. |
| spellingShingle | lesions pathogens field experiments yams nigeria dioscorea rotundata agroecology virulence Dania, V.O. Fadina, O.O. Ayodele, M. Kumar, P. Lava Distribution and virulence of fungal species isolated from yam (Dioscorea spp.) tubers in three agroecological zones of Nigeria |
| title | Distribution and virulence of fungal species isolated from yam (Dioscorea spp.) tubers in three agroecological zones of Nigeria |
| title_full | Distribution and virulence of fungal species isolated from yam (Dioscorea spp.) tubers in three agroecological zones of Nigeria |
| title_fullStr | Distribution and virulence of fungal species isolated from yam (Dioscorea spp.) tubers in three agroecological zones of Nigeria |
| title_full_unstemmed | Distribution and virulence of fungal species isolated from yam (Dioscorea spp.) tubers in three agroecological zones of Nigeria |
| title_short | Distribution and virulence of fungal species isolated from yam (Dioscorea spp.) tubers in three agroecological zones of Nigeria |
| title_sort | distribution and virulence of fungal species isolated from yam dioscorea spp tubers in three agroecological zones of nigeria |
| topic | lesions pathogens field experiments yams nigeria dioscorea rotundata agroecology virulence |
| url | https://hdl.handle.net/10568/102390 |
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