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Distribution and Effect of Bean flies, Ophiomyia phaseoli and O. spencerella, on Beans at Kabete, Kenya

Published online by Cambridge University Press:  19 September 2011

B. Tengecho ,
C. L. Coulson  and
H. A. d'Souza
B. Tengecho
Affiliation:
Department of Entomology, National Museum of Kenya, P.O. Box 40658, Nairobi, Kenya
C. L. Coulson
Affiliation:
Department of Crop Science, Faculty of Agriculture, Kabete Campus, P.O. Box 30197, Nairobi, Kenya
H. A. d'Souza
Affiliation:
Department of Crop Science, Faculty of Agriculture, Kabete Campus, P.O. Box 30197, Nairobi, Kenya
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Abstract

Eight cultivars of the common bean (Phaseolus vulgaris L.) and the Tepary bean (Phaseolus acutifolius) were used to study the distribution of puparia of the bean fly species Ophiomyia phaseoli (Tyron) and O. spencerella (Greathead). The puparia of the two bean fly species were distributed differently in the plant, O. spencerella predominating in the root and O. phaseoli in the shoot. There were significant differences between some of the bean cultivars and the number of puparia found. Tepary had the least puparia and P. vulgaris cultivars GLP 806 and GLP 1131 the most. There was a low correlation between the number of puparia and the final yield or root dry weight.

Résumé

Huit variétées des haricots ordinaires Phaseolus vulgaris L. et l'haricot “tepary” Phaseolus acutifolius ont été utilisées pour étudier la distribution des pupes des mouches de l'haricot de l'espèce Ophiomyia phaseoli (Tyron) et O. spencerella (Greathead). Les pupes des deux espèces de mouches de l'haricot se sont réparties différement sur la plante, O. phaseoli principalement sur la pousse et O. spencerella sur la racine. Il ya eu des différences significatives entre les variétées d'haricots et le nombre de pupes trouvées. Tepary avait le moins de pupes et GLP 806 et 1131 le plus. Aucune corrélation n'a été établie entre le nombre de pupes et le rendement final ou le poids sec des racines.

Keywords

Bean flydistributionyield
Type
Research Article
Information
International Journal of Tropical Insect Science , Volume 9 , Issue 4 , August 1988 , pp. 505 - 508
Copyright
Copyright © ICIPE 1988

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References

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