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Post-harvest impact of cassava brown streak disease in four countries in eastern Africa

Post-harvest impact of cassava brown streak disease in four countries in eastern Africa

Hillocks, Roderick J. and Maruthi, Midatharahally M. ORCID: 0000-0002-8060-866X (2015) Post-harvest impact of cassava brown streak disease in four countries in eastern Africa. Food Chain, 5 (1-2). pp. 116-122. ISSN 2046-1879 (Print), 2045-1887 (Online) (doi:https://doi.org/10.3362/2046-1887.2015.008)

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Abstract

Cassava brown streak disease (CBSD) is endemic to the coast of East Africa and the disease continues to spread to new areas in the Great Lakes region. In both these areas CBSD leaf symptoms occur at high incidences. However, it is the associated symptom of necrosis in the starch-bearing tissues that renders the root unfit for human consumption. Where root necrosis occurs, the economic viability of processing into flour is adversely affected. Surveys undertaken in Tanzania, Kenya, Uganda, and Malawi showed that CBSD leaf symptoms were present at high incidences but root necrosis incidence was lower than would be expected. It appears that a form of tolerance to CBSD occurs in which the plants are susceptible to infection by the virus but are less affected by the root symptom. Farmers practise selection for cassava varieties less prone to CBSD root necrosis leading to dependence on a decreasing number of varieties.

Item Type: Article
Additional Information: © Practical Action Publishing, 2015. The definitive, peer-reviewed and edited version of this article (Version of Scholarly Record) is published in Food Chain, vol.5, iss.1-2, pp.116-122, 2015, doi:10.3362/2046-1887.2015.008
Uncontrolled Keywords: Cassava, CBSD, Root necrosis, Yield loss
Faculty / Department / Research Group: Faculty of Engineering & Science > Natural Resources Institute > Agricultural Biosecurity Research Group
Last Modified: 03 Jan 2017 15:36
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
Selected for GREAT 2019: None
URI: http://gala.gre.ac.uk/id/eprint/14251

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