Nematode distribution and damage to yam in Central and Eastern Uganda
Yams (Dioscorea spp.) are food crops of growing significance in sub Saharan Africa. Unfortunately, nematodes are major pests to their production. A study was undertaken in major yam growing areas of Uganda to investigate the association of plant parasitic nematodes with damage symptoms. Nematodes...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés Francés |
| Publicado: |
2007
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/91457 |
| _version_ | 1855543117785071616 |
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| author | Mudiope, J. Speder, P.R. Coyne, Danny L. Maslen, R.N. Adipala, E. |
| author_browse | Adipala, E. Coyne, Danny L. Maslen, R.N. Mudiope, J. Speder, P.R. |
| author_facet | Mudiope, J. Speder, P.R. Coyne, Danny L. Maslen, R.N. Adipala, E. |
| author_sort | Mudiope, J. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Yams (Dioscorea spp.) are food crops of growing significance in sub Saharan Africa. Unfortunately, nematodes are major pests to their production. A study was undertaken in major yam growing areas of Uganda to investigate the association of plant parasitic nematodes with damage symptoms. Nematodes were assessed from tubers, roots and surrounding soil for seven cultivars belonging to Dioscorea alata, D. bulbisiana, D.burkilliana and D. cayenensis at harvest. Pratylenchus sudanensis was found in the greatest density and was followed by Meloidogyne spp. Higher densities of both nematodes were observed in the tubers rather than roots. Although symptoms of cracking and galling were relatively low, P. sudanensis incidence was strongly associated with cracking and Meloidogyne spp. with galling. Pratylenchus sudanensis and Meloidogyne spp. incidence their associated damage were, however, negatively correlated, suggesting inter-species competition. Principal components analysis of data suggested that differences in susceptibility to P. sudanensis occur between yam cultivars and species. |
| format | Journal Article |
| id | CGSpace91457 |
| institution | CGIAR Consortium |
| language | Inglés Francés |
| publishDate | 2007 |
| publishDateRange | 2007 |
| publishDateSort | 2007 |
| record_format | dspace |
| spelling | CGSpace914572023-12-08T19:43:41Z Nematode distribution and damage to yam in Central and Eastern Uganda Mudiope, J. Speder, P.R. Coyne, Danny L. Maslen, R.N. Adipala, E. dioscorea meloidogyne pratylenchus tuber cracking Yams (Dioscorea spp.) are food crops of growing significance in sub Saharan Africa. Unfortunately, nematodes are major pests to their production. A study was undertaken in major yam growing areas of Uganda to investigate the association of plant parasitic nematodes with damage symptoms. Nematodes were assessed from tubers, roots and surrounding soil for seven cultivars belonging to Dioscorea alata, D. bulbisiana, D.burkilliana and D. cayenensis at harvest. Pratylenchus sudanensis was found in the greatest density and was followed by Meloidogyne spp. Higher densities of both nematodes were observed in the tubers rather than roots. Although symptoms of cracking and galling were relatively low, P. sudanensis incidence was strongly associated with cracking and Meloidogyne spp. with galling. Pratylenchus sudanensis and Meloidogyne spp. incidence their associated damage were, however, negatively correlated, suggesting inter-species competition. Principal components analysis of data suggested that differences in susceptibility to P. sudanensis occur between yam cultivars and species. Les ignames (Dioscorea spp.) sont une culture alimentaire d’importance croissante en Afrique sub–saharienne.Malheureusement, les nématodes sont des parasites majeurs qui gênent sa production. Une étude était menéedans les principales régions productrices de l’igname en Ouganda en vue de pouvoir mener investigation surl’association des nématodes parasitant les plantes avec les symptômes de dommages. Les nématodes étaientévalués à partir des racines, tubercules, et sol environnant pour 7 cultivars appartenant à Dioscorea alata, D.bulbisiana, D. burkilliana et D. cayenensis à la récolte. Pratylenchus sudanensis était considérée l’espèce à plushaute densité et était suivie par Meloidogyne spp. Des densités plus élevées des nématodes étaient observéesplus dans les tubercules que dans les racines. Bien que les symptômes de craquelures et d’irritations étaientrelativement bas, P.Sudanensis et Meloidogyne spp. étaient respectivement associées à la craquelure et à l’irritation.Pratylenctus Sudanensis et Meloidogyne spp. présentaient des damages associés, qui étaient cependant négativementcorrélés suggérant une compétition inter-espèces. L’analyse principale des données a suggéré des différences à lasusceptibilité du P. Sudanensis surviennent entre cultivars et espèces d’ignames. 2007 2018-03-07T11:25:57Z 2018-03-07T11:25:57Z Journal Article https://hdl.handle.net/10568/91457 en fr Limited Access Mudiope, J., Speder, P.R., Coyne, D., Maslen, R.N. & Adipala, E. (2007). Nematode distribution and damage to yam in central and eastern Uganda. African Crop Science Journal, 15(2), 93 - 99. |
| spellingShingle | dioscorea meloidogyne pratylenchus tuber cracking Mudiope, J. Speder, P.R. Coyne, Danny L. Maslen, R.N. Adipala, E. Nematode distribution and damage to yam in Central and Eastern Uganda |
| title | Nematode distribution and damage to yam in Central and Eastern Uganda |
| title_full | Nematode distribution and damage to yam in Central and Eastern Uganda |
| title_fullStr | Nematode distribution and damage to yam in Central and Eastern Uganda |
| title_full_unstemmed | Nematode distribution and damage to yam in Central and Eastern Uganda |
| title_short | Nematode distribution and damage to yam in Central and Eastern Uganda |
| title_sort | nematode distribution and damage to yam in central and eastern uganda |
| topic | dioscorea meloidogyne pratylenchus tuber cracking |
| url | https://hdl.handle.net/10568/91457 |
| work_keys_str_mv | AT mudiopej nematodedistributionanddamagetoyamincentralandeasternuganda AT spederpr nematodedistributionanddamagetoyamincentralandeasternuganda AT coynedannyl nematodedistributionanddamagetoyamincentralandeasternuganda AT maslenrn nematodedistributionanddamagetoyamincentralandeasternuganda AT adipalae nematodedistributionanddamagetoyamincentralandeasternuganda |