Journal ArticleDOI
Breeding cassava for resistance to cassava mosaic disease
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TLDR
Over the past eight years, significant progress has been made at the International Institute of Tropical Agriculture (IITA) and resistance to CMD has been successfully incorporated into high yielding cultivars of acceptable quality.Abstract:
Cassava mosaic disease (CMD) is one of the most serious and widespread diseases throughout cassava growing areas in Africa, causing yield reductions of up to 90%. Early research on breeding of cassava (Manihot esculentaCrantz) for resistance to CMD in Africa is reviewed. Changes in population size and in activity of the white-fly vector to CMD (Bemisia tabaciGenn.) in relation to changes in environmental conditions such as amount and distribution of rainfall, light intensity and temperature are discussed in relation to screening for resistance to CMD. Over the past eight years, significant progress has been made at the International Institute of Tropical Agriculture (IITA). Resistance to CMD has been successfully incorporated into high yielding cultivars of acceptable quality. The CMD resistant material has been evaluated and many promising clones have been selected in various countries in tropical Africa and India. The resistance has been effective in those countries.read more
Citations
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Journal ArticleDOI
Cassava breeding: opportunities and challenges.
TL;DR: Cassava breeding faces several limitations that need to be addressed, including the heterozygous nature of the crop and parental lines used to generate new segregating progenies makes it difficult to identify parents with good breeding values.
Journal ArticleDOI
Comparing the regional epidemiology of the cassava mosaic and cassava brown streak virus pandemics in Africa
James P. Legg,Simon C. Jeremiah,Hannington Obiero,Midatharahally N. Maruthi,Innocent Ndyetabula,Geoffrey Okao-Okuja,H. Bouwmeester,S. Bigirimana,W. Tata-Hangy,G. Gashaka,Geoffrey Mkamilo,Titus Alicai,P. Lava Kumar +12 more
TL;DR: An important similarity between the pandemics is that the viruses occurring in pandemic-affected areas are also found elsewhere, indicating that contrary to earlier published conclusions, the viruses per se are unlikely to be the key factors driving the two pandemic.
Journal ArticleDOI
Cassava mosaic geminiviruses in Africa.
TL;DR: In this review of cassava mosaic geminiviruses in Africa, each of these relationships is examined, and the ways in which the CMGs have exploited them to their own advantage are highlighted.
Book ChapterDOI
Cassava mosaic virus disease in East and Central Africa: epidemiology and management of a regional pandemic.
TL;DR: A detailed description of the character, pattern of spread and impact of the African CMD pandemic is provided and management initiatives implemented to mitigate against its effects are reviewed.
References
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Journal ArticleDOI
Studies of the mosaic diseases of cassava
H. H. Storey,R. F. W. Nichols +1 more
TL;DR: A convenient and reliable single-leaf cage technique has been developed for treating mosaic disease in cassava on the basis of knowledge of differences in the strains of the virus, of which two groups of severe and mild strains are recognized.
Journal ArticleDOI
Breeding cassava for virus resistance.
TL;DR: Breeding cassava for virus resistance was discussed in this article, where it was shown that cassava can be successfully used for maize-based maize crops in the East African Agricultural Journal: Vol. 12, No. 3.