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The use of common bean (Phaseolus vulgaris) traditional varieties and their mixtures with commercial varieties to manage bean fly (Ophiomyia spp.) infestations in Uganda

The bean fly (Ophiomyia spp.) is considered the most economically damaging field insect pest of common beans in Uganda. Despite the use of existing pest management approaches, reported damage has remained high. Forty-eight traditional and improved common bean varieties currently grown in farmers’ fi...

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Autores principales: Ssekandi, W., Mulumba, J. W., Colangelo, P., Nankya, R., Fadda, C., Karungi, J., Otim, M., De Santis, P., Jarvis, D. I.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4757615/
https://www.ncbi.nlm.nih.gov/pubmed/26924956
http://dx.doi.org/10.1007/s10340-015-0678-7
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author Ssekandi, W.
Mulumba, J. W.
Colangelo, P.
Nankya, R.
Fadda, C.
Karungi, J.
Otim, M.
De Santis, P.
Jarvis, D. I.
author_facet Ssekandi, W.
Mulumba, J. W.
Colangelo, P.
Nankya, R.
Fadda, C.
Karungi, J.
Otim, M.
De Santis, P.
Jarvis, D. I.
author_sort Ssekandi, W.
collection PubMed
description The bean fly (Ophiomyia spp.) is considered the most economically damaging field insect pest of common beans in Uganda. Despite the use of existing pest management approaches, reported damage has remained high. Forty-eight traditional and improved common bean varieties currently grown in farmers’ fields were evaluated for resistance against bean fly. Data on bean fly incidence, severity and root damage from bean stem maggot were collected. Generalized linear mixed model (GLMM) revealed significant resistance to bean fly in the Ugandan traditional varieties. A popular resistant traditional variety and a popular susceptible commercial variety were selected from the 48 varieties and evaluated in pure and mixed stands. The incidence of bean fly infestation on both varieties in mixtures with different arrangements (systematic random versus rows), and different proportions within each of the two arrangements, was measured and analysed using GLMMs. The proportion of resistant varieties in a mixture and the arrangement type significantly decreased bean fly damage compared to pure stands, with the highest decrease in damage registered in the systematic random mixture with at least 50 % of resistant variety. The highest reduction in root damage, obvious 21 days after planting, was found in systematic random mixtures with at least 50 % of the resistant variety. Small holder farmers in East Africa and elsewhere in the world have local preferences for growing bean varieties in genetic mixtures. These mixtures can be enhanced by the use of resistant varieties in the mixtures to reduce bean fly damage on susceptible popular varieties. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s10340-015-0678-7) contains supplementary material, which is available to authorized users.
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spelling pubmed-47576152016-02-26 The use of common bean (Phaseolus vulgaris) traditional varieties and their mixtures with commercial varieties to manage bean fly (Ophiomyia spp.) infestations in Uganda Ssekandi, W. Mulumba, J. W. Colangelo, P. Nankya, R. Fadda, C. Karungi, J. Otim, M. De Santis, P. Jarvis, D. I. J Pest Sci (2004) Original Paper The bean fly (Ophiomyia spp.) is considered the most economically damaging field insect pest of common beans in Uganda. Despite the use of existing pest management approaches, reported damage has remained high. Forty-eight traditional and improved common bean varieties currently grown in farmers’ fields were evaluated for resistance against bean fly. Data on bean fly incidence, severity and root damage from bean stem maggot were collected. Generalized linear mixed model (GLMM) revealed significant resistance to bean fly in the Ugandan traditional varieties. A popular resistant traditional variety and a popular susceptible commercial variety were selected from the 48 varieties and evaluated in pure and mixed stands. The incidence of bean fly infestation on both varieties in mixtures with different arrangements (systematic random versus rows), and different proportions within each of the two arrangements, was measured and analysed using GLMMs. The proportion of resistant varieties in a mixture and the arrangement type significantly decreased bean fly damage compared to pure stands, with the highest decrease in damage registered in the systematic random mixture with at least 50 % of resistant variety. The highest reduction in root damage, obvious 21 days after planting, was found in systematic random mixtures with at least 50 % of the resistant variety. Small holder farmers in East Africa and elsewhere in the world have local preferences for growing bean varieties in genetic mixtures. These mixtures can be enhanced by the use of resistant varieties in the mixtures to reduce bean fly damage on susceptible popular varieties. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s10340-015-0678-7) contains supplementary material, which is available to authorized users. Springer Berlin Heidelberg 2015-07-02 2016 /pmc/articles/PMC4757615/ /pubmed/26924956 http://dx.doi.org/10.1007/s10340-015-0678-7 Text en © The Author(s) 2015 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Original Paper
Ssekandi, W.
Mulumba, J. W.
Colangelo, P.
Nankya, R.
Fadda, C.
Karungi, J.
Otim, M.
De Santis, P.
Jarvis, D. I.
The use of common bean (Phaseolus vulgaris) traditional varieties and their mixtures with commercial varieties to manage bean fly (Ophiomyia spp.) infestations in Uganda
title The use of common bean (Phaseolus vulgaris) traditional varieties and their mixtures with commercial varieties to manage bean fly (Ophiomyia spp.) infestations in Uganda
title_full The use of common bean (Phaseolus vulgaris) traditional varieties and their mixtures with commercial varieties to manage bean fly (Ophiomyia spp.) infestations in Uganda
title_fullStr The use of common bean (Phaseolus vulgaris) traditional varieties and their mixtures with commercial varieties to manage bean fly (Ophiomyia spp.) infestations in Uganda
title_full_unstemmed The use of common bean (Phaseolus vulgaris) traditional varieties and their mixtures with commercial varieties to manage bean fly (Ophiomyia spp.) infestations in Uganda
title_short The use of common bean (Phaseolus vulgaris) traditional varieties and their mixtures with commercial varieties to manage bean fly (Ophiomyia spp.) infestations in Uganda
title_sort the use of common bean (phaseolus vulgaris) traditional varieties and their mixtures with commercial varieties to manage bean fly (ophiomyia spp.) infestations in uganda
topic Original Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4757615/
https://www.ncbi.nlm.nih.gov/pubmed/26924956
http://dx.doi.org/10.1007/s10340-015-0678-7
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