The differential impact of four tropical species of root-knot nematodes (Meloidogyne spp.) on biofortified cassava
Cassava plays an important food security role in Africa. Although a hardy crop in general, average yields are low, while traditional cultivars tend to be low in nutrients and vitamins. Substantial efforts have therefore been made to improve the nutritional quality of cassava through the development...
| Main Authors: | , , , |
|---|---|
| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Brill
2022
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/129893 |
| _version_ | 1855531265470496768 |
|---|---|
| author | Oyetunde, A.K. Afolami, S. Kulakow, Peter A. Coyne, D. |
| author_browse | Afolami, S. Coyne, D. Kulakow, Peter A. Oyetunde, A.K. |
| author_facet | Oyetunde, A.K. Afolami, S. Kulakow, Peter A. Coyne, D. |
| author_sort | Oyetunde, A.K. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Cassava plays an important food security role in Africa. Although a hardy crop in general, average yields are low, while traditional cultivars tend to be low in nutrients and vitamins. Substantial efforts have therefore been made to improve the nutritional quality of cassava through the development of biofortified cultivars. Although root-knot nematodes (RKN) are among the various important constraints affecting production, details on the impact of different species of RKN on cassava productivity are scarce. In this study, six popular cultivars of biofortified cassava were evaluated for their response to M. arenaria, M. enterolobii, M. incognita, M. javanica and a combination of all four species, in pots. All tested cultivars were susceptible to the four Meloidogyne species, but some cultivars showed a tolerance to M. arenaria infection. Galling damage was observed on feeder roots of inoculated plants, with nematode reproduction factors ranging between 2.3 and 9.5. Plant height, stem girth and fresh plant mass were significantly lower for most cultivars by as much as 70% following RKN infection. The highest root galling and damage were observed in plants following inoculation with a combination of the four species. As individual species inoculations, M. incognita and M. javanica were the most damaging, with the least damage observed in plants inoculated with M. arenaria only. These results confirm the pathogenicity of M. arenaria, M. incognita and M. javanica and further illustrate the potential of M. enterolobii to impact cassava production, while combined species infections demonstrate the greater levels of damage that these may cause. |
| format | Journal Article |
| id | CGSpace129893 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Brill |
| publisherStr | Brill |
| record_format | dspace |
| spelling | CGSpace1298932025-12-08T09:54:28Z The differential impact of four tropical species of root-knot nematodes (Meloidogyne spp.) on biofortified cassava Oyetunde, A.K. Afolami, S. Kulakow, Peter A. Coyne, D. food security meloidogyne arenaria meloidogyne incognita meloidogyne javanica cassava nutrition Cassava plays an important food security role in Africa. Although a hardy crop in general, average yields are low, while traditional cultivars tend to be low in nutrients and vitamins. Substantial efforts have therefore been made to improve the nutritional quality of cassava through the development of biofortified cultivars. Although root-knot nematodes (RKN) are among the various important constraints affecting production, details on the impact of different species of RKN on cassava productivity are scarce. In this study, six popular cultivars of biofortified cassava were evaluated for their response to M. arenaria, M. enterolobii, M. incognita, M. javanica and a combination of all four species, in pots. All tested cultivars were susceptible to the four Meloidogyne species, but some cultivars showed a tolerance to M. arenaria infection. Galling damage was observed on feeder roots of inoculated plants, with nematode reproduction factors ranging between 2.3 and 9.5. Plant height, stem girth and fresh plant mass were significantly lower for most cultivars by as much as 70% following RKN infection. The highest root galling and damage were observed in plants following inoculation with a combination of the four species. As individual species inoculations, M. incognita and M. javanica were the most damaging, with the least damage observed in plants inoculated with M. arenaria only. These results confirm the pathogenicity of M. arenaria, M. incognita and M. javanica and further illustrate the potential of M. enterolobii to impact cassava production, while combined species infections demonstrate the greater levels of damage that these may cause. 2022-05-10 2023-04-04T08:18:08Z 2023-04-04T08:18:08Z Journal Article https://hdl.handle.net/10568/129893 en Open Access application/pdf Brill Oyetunde, A.K., Afolami, S., Kulakow, P. & Coyne, D. (2022). The differential impact of four tropical species of root-knot nematodes (Meloidogyne spp.) on biofortified cassava. Nematology, 24(6), 695-705. |
| spellingShingle | food security meloidogyne arenaria meloidogyne incognita meloidogyne javanica cassava nutrition Oyetunde, A.K. Afolami, S. Kulakow, Peter A. Coyne, D. The differential impact of four tropical species of root-knot nematodes (Meloidogyne spp.) on biofortified cassava |
| title | The differential impact of four tropical species of root-knot nematodes (Meloidogyne spp.) on biofortified cassava |
| title_full | The differential impact of four tropical species of root-knot nematodes (Meloidogyne spp.) on biofortified cassava |
| title_fullStr | The differential impact of four tropical species of root-knot nematodes (Meloidogyne spp.) on biofortified cassava |
| title_full_unstemmed | The differential impact of four tropical species of root-knot nematodes (Meloidogyne spp.) on biofortified cassava |
| title_short | The differential impact of four tropical species of root-knot nematodes (Meloidogyne spp.) on biofortified cassava |
| title_sort | differential impact of four tropical species of root knot nematodes meloidogyne spp on biofortified cassava |
| topic | food security meloidogyne arenaria meloidogyne incognita meloidogyne javanica cassava nutrition |
| url | https://hdl.handle.net/10568/129893 |
| work_keys_str_mv | AT oyetundeak thedifferentialimpactoffourtropicalspeciesofrootknotnematodesmeloidogynespponbiofortifiedcassava AT afolamis thedifferentialimpactoffourtropicalspeciesofrootknotnematodesmeloidogynespponbiofortifiedcassava AT kulakowpetera thedifferentialimpactoffourtropicalspeciesofrootknotnematodesmeloidogynespponbiofortifiedcassava AT coyned thedifferentialimpactoffourtropicalspeciesofrootknotnematodesmeloidogynespponbiofortifiedcassava AT oyetundeak differentialimpactoffourtropicalspeciesofrootknotnematodesmeloidogynespponbiofortifiedcassava AT afolamis differentialimpactoffourtropicalspeciesofrootknotnematodesmeloidogynespponbiofortifiedcassava AT kulakowpetera differentialimpactoffourtropicalspeciesofrootknotnematodesmeloidogynespponbiofortifiedcassava AT coyned differentialimpactoffourtropicalspeciesofrootknotnematodesmeloidogynespponbiofortifiedcassava |