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Host plant resistance for cowpea insect pest management

Published online by Cambridge University Press:  19 September 2011

S. R. Singh
S. R. Singh
Affiliation:
International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria
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Abstract

Insect pests are major constraints in cowpea production. Breeding for insect resistance is a major objective of cowpea improvement programme at IITA. Resistance to leafhoppers and aphids has been incorporated in advanced breeding lines thus eliminating the need for other control measures. Similarly, a moderate level of resistance to thrips and cowpea storage weevil has also been incorporated thus reducing the damage due to these two pests. A moderate level of resistance to legume pod-borer and pod sucking bugs has also been identified and is being incorporated in advanced breeding lines. The long term strategy is to develop cowpea cultivars with multiple resistance to insect and diseases with superior agronomic characters and local adaptability.

Résumé

Les ravageurs constituent le principal facteur limitant dans le cadre de la production du niébé. C'est pourquoi le programme d'amélioration du niébé de l'Iita a placé la sélection pour la résistance aux insectes nuisibles au premier rang de ses priorités. Ainsi, il est parvenu à incorporer la résistance aux jassides et aux aphides à certaines lignées de sélection avancées, écartant de la sorte le recours à d'autres mesures de lutte. De même, on a pu réduire les dégâts imputables aux thrips et aux bruches des magasins en conférant au matériel de sélection un niveau modéré de résistance à ces deux insectes. Une source de résistance modérée aux foreuses des gousses et au complexe de punaises a également été identifiée, et l'on procède à l'heure actuelle à son incorporation dans des lignées de sélection avancées. La stratégie à long terme du programme consiste à mettre au point des cultivars du niébé dotés d'une résistance multiple aux ravageurs et aux maladies, dotés de caractères agronomiques supérieurs, et adaptés aux conditions locales.

Keywords

Host plant resistancecowpea pest complexcowpea insect pest managementleafhoppersaphidsthripslegume pod-borercowpea storage weevilmultiple resistanceRésistance du plant-hôtecomplexe des ravageurs du niébélutte contre les insectes du niébéjassidesaphidesthripsforeuses des goussesbruche des magasinsrésistance multiple.
Type
Symposium VIII: Plant Resistance in Tropical Insect Pest Management
Information
International Journal of Tropical Insect Science , Volume 8 , Issue 4-5-6: Recent Advances in Research on Tropical Entomology , December 1987 , pp. 765 - 769
Copyright
Copyright © ICIPE 1987

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References

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