Impact of environmental conditions and seed physico-chemical characteristics on the resistance of cowpea genotypes to Callosobruchus maculatus F. (Coleoptera: Chrysomelidae) infestation
| Autor: | Clément Saidou, S. Dolinassou, D. Kosini, J.-B.T. Noubissié, Elias Nchiwan Nukenine |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
biology Resistance (ecology) General Medicine biology.organism_classification medicine.disease_cause 010603 evolutionary biology 01 natural sciences Insect infestation Callosobruchus maculatus Vigna Toxicology 010602 entomology Insect Science Infestation Genotype medicine Agronomy and Crop Science |
| Zdroj: | Bulletin of Entomological Research. 109:595-603 |
| ISSN: | 1475-2670 0007-4853 |
| DOI: | 10.1017/s0007485318000962 |
| Popis: | There is a need to improve research and extension documentation to assist farmers in making better use of the available resistant cowpea genotypes to insects attack during storage. A study was conducted to determine the resistance of ten cowpea genotypes [Vigna unguiculata (L.) Walp.] to Callosobruchus maculatus F. attack in the Sudano-Guinean and Sudano-Sahelian agro-ecological zones (SS) of Cameroon. Thereafter, seeds were analyzed for physical properties and chemical composition to determine the main parameters of their resistance against C. maculatus. The SS was more suitable for insect infestation. Genotypes were classified into resistant to highly susceptible. Results showed that the physical characteristics of seeds were less important than the chemical components for conferring resistance to C. maculatus. Two genotypes, Samira and Lade, consistently demonstrated high tolerance to infestation by C. maculatus, and therefore may be recommended for use in breeding programs as a source of resistance and then to minimize the dependence on insecticides for the control of insect pests under subsistence farming conditions in Cameroon. |
| Databáze: | OpenAIRE |
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