Inferences on pod wall and seed defences against the brown cowpea coreid bug, Clavigralla tomentosicollis Stäl. (Hem., Coreidae) in wild and cultivated Vigna species
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- Authors:
- JACKAI, L. E. N
NOKOE, S
TAYO, B. O
KOONA, P - Author Affiliations:
- International Institute of Tropical Agriculture (IITA), Oyo Road, Ibadan, Nigeria
- Source:
- Journal of applied entomology (1986). 125(5):277-286
- Publication Date:
- 2001-01-01
- Language:
- English
- Abstract:
- Studies were conducted in the laboratory to investigate the different components of the resistance of Vigna vexillata A. Richards, TVnu 72, and several cultivars of cultivated Vigna spp. to infestation and damage by the brown cowpea coreid, Clavigralla tomentosicollis Stäl. The main objective was to determine the different roles of the pod wall and seeds, and the relationship between seed size, number, and damage by this insect. Results showed that both the pod wall and seed clearly contribute different components to the resistance of TVnu 72 to C. tomentosicollis. Analysis of the results suggests that the seed defences and the pod wall pericarp may be more important than are trichomes in this resistance. Seed number was found to influence the extent of damage in a more predictable manner than seed size. However, because both of these traits are generally inversely related and mutually exclusive, their individual effects cannot be completely separated. The implications of these traits in a breeding programme targeted at a specific consumer group are discussed.
- Notes:
- Agronomy. Soil sciences and vegetal productions
- Subjects:
- Agronomy, agriculture, phytopathology
Agronomie, agriculture, phytopathologie
Entomology
Entomologie
Sciences biologiques et medicales
Biological and medical sciences
Sciences biologiques fondamentales et appliquees. Psychologie
Fundamental and applied biological sciences. Psychology
Agronomie. Sciences du sol et productions vegetales
Agronomy. Soil science and plant productions
Génétique et amélioration des plantes d'intérêt économique
Genetics and breeding of economic plants
Sélection variétale. Amélioration spéciale, objectifs d'amélioration
Varietal selection. Specialized plant breeding, plant breeding aims
Résistance aux organismes nuisibles
Pest resistance
Déprédateurs
Pest animals
Amélioration génétique
Genetic improvement
Enriquecimiento genético
Angiospermae
Arthropoda
Coreidae
Culture tropicale
Tropical crop
Cultivo tropical
Dicotyledones
Déprédateur
Pest
Plaga
Fruit
Fruto
Heteroptera
Insecta
Invertebrata
Leguminosae
Légumineuse grain
Grain legume
Leguminosa grano
Plante sauvage
Wild plant
Planta salvaje
Spermatophyta
Comparaison interspécifique
Interspecific comparison
Comparación interespecífica
Cultivar
Dégât
Damage
Estrago
Effet dimensionnel
Size effect
Efecto dimensional
Etude en laboratoire
Laboratory study
Estudio en laboratorio
Gousse
Pod
Vaina
Graine
Seeds
Semillas
Infestation
Infestación
Lignée sélection
Breeding line
Línea selección
Mécanisme défense
Defense mechanism
Mecanismo defensa
Ressource génétique
Genetic resource
Recurso genético
Résistance insecte
Insect resistance
Resistencia insecto
Trichome
Tricoma
Vigna unguiculata
Clavigralla tomentosicollis
Péricarpe
Pericarp
Vigna vexillata - Format:
- Academic Journal
- Database:
- PASCAL Archive
- Journal:
- Journal of applied entomology (1986)
- Volume:
- 125
- Issue:
- 5
- Page Start:
- 277
- Page Count:
- 10
- ISSN:
- 09312048
- Publisher:
- Berlin: Blackwell, 2001.
- Document Type:
- Article
- Physical Description:
- print, 30 ref
