Interactions between Fusarium verticillioides, Aspergillus flavus and insects in improved maize populations in lowland Africa
An experiment was designed to compare cycles of selection of four maize genotypes for ear- and grain-quality characteristics, interactions with Aspergillus flavus and Fusarium verticillioides infection, and insect ear infestation in two seasons. Mean infection levels by A. flavus and F. verticillioi...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Scientific Societies
2000
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| Online Access: | https://hdl.handle.net/10568/92639 |
| _version_ | 1855522334117462016 |
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| author | Cardwell, K. Kling, J. Maziya-Dixon, B.B. Bosque Pérez, N.A. |
| author_browse | Bosque Pérez, N.A. Cardwell, K. Kling, J. Maziya-Dixon, B.B. |
| author_facet | Cardwell, K. Kling, J. Maziya-Dixon, B.B. Bosque Pérez, N.A. |
| author_sort | Cardwell, K. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | An experiment was designed to compare cycles of selection of four maize genotypes for ear- and grain-quality characteristics, interactions with Aspergillus flavus and Fusarium verticillioides infection, and insect ear infestation in two seasons. Mean infection levels by A. flavus and F. verticillioides were significantly higher in inoculated rows than in the controls. The F. verticillioides-inoculated rows had significantly more coleopteran beetles and lepidopteran borers per ear than the controls and A. flavus-inoculated rows. Genotypes and cycles of selection within genotype were not different with respect to number of insects or percent fungal incidence in the ear, but they were different for husk extension, field weight, 100-grain weight, and grain density. Inoculation with either fungus resulted in significantly higher percentage of floaters (i.e., loss of grain density) and lower grain weight than the controls. Aflatoxin (B1 and B2) in A. flavus-inoculated rows averaged 327 ppb in the first season and 589 ppb in the second (dryer) season. Fumonisin levels in F. verticillioides-inoculated rows did not differ between seasons, with an average of 6.2 ppm across seasons. In the noninoculated control rows, fumonisin was significantly higher in the first (5.3 ppm) than in the second (3.1 ppm) season. For all genotypes, husk extension and yield parameters decreased in the fungal-inoculated treatments. General ear-rot scoring was significantly correlated with incidence of F. verticillioides in kernels and grain-weight loss but not with A. flavus in the grain. |
| format | Journal Article |
| id | CGSpace92639 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2000 |
| publishDateRange | 2000 |
| publishDateSort | 2000 |
| publisher | Scientific Societies |
| publisherStr | Scientific Societies |
| record_format | dspace |
| spelling | CGSpace926392024-08-27T10:35:37Z Interactions between Fusarium verticillioides, Aspergillus flavus and insects in improved maize populations in lowland Africa Cardwell, K. Kling, J. Maziya-Dixon, B.B. Bosque Pérez, N.A. An experiment was designed to compare cycles of selection of four maize genotypes for ear- and grain-quality characteristics, interactions with Aspergillus flavus and Fusarium verticillioides infection, and insect ear infestation in two seasons. Mean infection levels by A. flavus and F. verticillioides were significantly higher in inoculated rows than in the controls. The F. verticillioides-inoculated rows had significantly more coleopteran beetles and lepidopteran borers per ear than the controls and A. flavus-inoculated rows. Genotypes and cycles of selection within genotype were not different with respect to number of insects or percent fungal incidence in the ear, but they were different for husk extension, field weight, 100-grain weight, and grain density. Inoculation with either fungus resulted in significantly higher percentage of floaters (i.e., loss of grain density) and lower grain weight than the controls. Aflatoxin (B1 and B2) in A. flavus-inoculated rows averaged 327 ppb in the first season and 589 ppb in the second (dryer) season. Fumonisin levels in F. verticillioides-inoculated rows did not differ between seasons, with an average of 6.2 ppm across seasons. In the noninoculated control rows, fumonisin was significantly higher in the first (5.3 ppm) than in the second (3.1 ppm) season. For all genotypes, husk extension and yield parameters decreased in the fungal-inoculated treatments. General ear-rot scoring was significantly correlated with incidence of F. verticillioides in kernels and grain-weight loss but not with A. flavus in the grain. 2000-03 2018-05-17T09:02:56Z 2018-05-17T09:02:56Z Journal Article https://hdl.handle.net/10568/92639 en Limited Access Scientific Societies Cardwell, K., Kling, J., Maziya-Dixon, B. & Bosque-Perez, N. (2000). Interactions between Fusarium verticillioides, Aspergillus flavus, and insect infestation in four maize genotypes in lowland Africa. Phytopathology, 90, 276-284. |
| spellingShingle | Cardwell, K. Kling, J. Maziya-Dixon, B.B. Bosque Pérez, N.A. Interactions between Fusarium verticillioides, Aspergillus flavus and insects in improved maize populations in lowland Africa |
| title | Interactions between Fusarium verticillioides, Aspergillus flavus and insects in improved maize populations in lowland Africa |
| title_full | Interactions between Fusarium verticillioides, Aspergillus flavus and insects in improved maize populations in lowland Africa |
| title_fullStr | Interactions between Fusarium verticillioides, Aspergillus flavus and insects in improved maize populations in lowland Africa |
| title_full_unstemmed | Interactions between Fusarium verticillioides, Aspergillus flavus and insects in improved maize populations in lowland Africa |
| title_short | Interactions between Fusarium verticillioides, Aspergillus flavus and insects in improved maize populations in lowland Africa |
| title_sort | interactions between fusarium verticillioides aspergillus flavus and insects in improved maize populations in lowland africa |
| url | https://hdl.handle.net/10568/92639 |
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