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Book Chapter 2017

Autor: Legg, J.P. Álvarez, Elizabeth

Cassava diseases are major production constraints wherever the crop is grown. Although diseases will continue to pose a challenge to cassava producers in the immediate future, tremendous progress is being made in developing control tactics. These range from biotechnological approaches for enhanci...

Enlace original: https://cgspace.cgiar.org/handle/10568/89962

Investigación en Agricultura
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Legg, J.P. ,  Álvarez, Elizabeth ,  [Diseases affecting cassava] ,  Diseases affecting cassava
Journal Article 2017

Autor: Legg, J.P. Ndalahwa, M. Yabeja, J. Ndyetabula, I. Bouwmeester, H.J. Shirima, R. Mtunda, K.

Cassava viruses are the major biotic constraint to cassava production in Africa. Community-wide action to manage them has not been attempted since a successful cassava mosaic disease control programme in the 1930s/40 s in Uganda. A pilot initiative to investigate the effectiveness of community ph...

Enlace original: https://cgspace.cgiar.org/handle/10568/88010

Investigación en Agricultura
GIS
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Legg, J.P. ,  Ndalahwa, M. ,  Yabeja, J. ,  Ndyetabula, I. ,  Bouwmeester, H.J. ,  Shirima, R. ,  Mtunda, K. ,  [Community phytosanitation to manage cassava brown streak disease] ,  Community phytosanitation to manage cassava brown streak disease
Journal Article 2015-09-15

Autor: Mulenga, R. Miano, D. Chikoti, Patrick Chiza Ndunguru, J. Legg, J.P. Alabi, O.J.

Cassava mosaic disease (CMD) is a major constraint to sustainable production of cassava (Manihot esculenta Crantz) in Zambia and other sub-Saharan African countries. During a survey conducted between April and May 2014 in six (Western, Northwestern, Northern, Luapula, Lusaka, and Eastern) provinc...

Enlace original: https://cgspace.cgiar.org/handle/10568/76377

Investigación en Agricultura
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Mulenga, R. ,  Miano, D. ,  Chikoti, Patrick Chiza ,  Ndunguru, J. ,  Legg, J.P. ,  Alabi, O.J. ,  [First report of East African cassava mosaic Malawi virus in plants affected by cassava mosaic disease in Zambia] ,  First report of East African cassava mosaic Malawi virus in plants affected by cassava mosaic disease in Zambia
Journal Article 2012-01

Autor: Abarshi, M.M. Mohammed, I. Jeremiah, S.C. Legg, J.P. Kumar, P.L. Hillocks, R.J. Maruthi, M.N.

Uniplex and multiplex reverse transcription-polymerase chain reaction (RT-PCR) protocols were developed for the detection of cassava brown streak viruses (CBSVs) in single and mixed infections with cassava mosaic begomoviruses (CMBs) in a tropical crop plant, cassava (Manihot esculenta). CMBs con...

Enlace original: https://cgspace.cgiar.org/handle/10568/77415

Investigación en Agricultura
RNA
DNA
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Abarshi, M.M. ,  Mohammed, I. ,  Jeremiah, S.C. ,  Legg, J.P. ,  Kumar, P.L. ,  Hillocks, R.J. ,  Maruthi, M.N. ,  [Multiplex RTPCR assays for the simultaneous detection of both RNA and DNA viruses infecting cassava and the common occurrence of mixed infections by two cassava brown streak viruses in East Africa] ,  Multiplex RTPCR assays for the simultaneous detection of both RNA and DNA viruses infecting cassava and the common occurrence of mixed infections by two cassava brown streak viruses in East Africa
Journal Article 2014

Autor: Lapidot, M. Legg, J.P. Wintermantel, William M. Polston, J.E.

Whiteflies are a key pest of crops in open-field production throughout the tropics andsubtropics. This is due in large part to the long and diverse list of devastating plantviruses transmitted by these vectors. Open-field production provides many challengesto manage these viruses and in many case...

Enlace original: https://cgspace.cgiar.org/handle/10568/76099

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Lapidot, M. ,  Legg, J.P. ,  Wintermantel, William M. ,  Polston, J.E. ,  [Management of whitefly transmitted viruses in openfield production systems] ,  Management of whitefly transmitted viruses in openfield production systems
Journal Article 2014

Autor: Legg, J.P. Sseruwagi, P. Boniface, S. Okao-Okuja, G. Shirima, R.R. Bigirimana, S. Gashaka, G. Herrmann, H-W. Jeremiah, S. Ndyetabula, I. Tata-Hangy, W. Masembe, C. Brown, J. Obiero, H.

The greatest current threat to cassava in sub-Saharan Africa, is the continued expansion of plant virus pandemics being driven by super-abundant populations of the whitefly vector, Bemisia tabaci. To track the association of putatively genetically distinct populations of B. tabaci with pandemics ...

Enlace original: https://cgspace.cgiar.org/handle/10568/76104

Investigación en Agricultura
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Legg, J.P. ,  Sseruwagi, P. ,  Boniface, S. ,  Okao-Okuja, G. ,  Shirima, R.R. ,  Bigirimana, S. ,  Gashaka, G. ,  Herrmann, H-W. ,  Jeremiah, S. ,  Ndyetabula, I. ,  Tata-Hangy, W. ,  Masembe, C. ,  Brown, J. ,  Obiero, H. ,  [Spatiotemporal patterns of genetic change amongst populations of cassava Bemisia tabaci whiteflies driving virus pandemics in East and Central Africa] ,  Spatiotemporal patterns of genetic change amongst populations of cassava Bemisia tabaci whiteflies driving virus pandemics in East and Central Africa
Journal Article 2014-10

Autor: Legg, J.P. Shirima, R.R. Tajebe, L. Guastella, D. Boniface, S. Jeremiah, S. Nsami, E. Chikoti, Patrick Chiza Rapisarda, C.

Cassava mosaic disease and cassava brown streak disease are caused by viruses transmitted by Bemisia tabaci and affect approximately half of all cassava plants in Africa, resulting in annual production losses of more than $US 1 billion. A historical and current bias towards virus rather than vect...

Enlace original: https://cgspace.cgiar.org/handle/10568/76098

Investigación en Agricultura
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Legg, J.P. ,  Shirima, R.R. ,  Tajebe, L. ,  Guastella, D. ,  Boniface, S. ,  Jeremiah, S. ,  Nsami, E. ,  Chikoti, Patrick Chiza ,  Rapisarda, C. ,  [Biology and management of Bemisia whitefly vectors of cassava virus pandemics in Africa] ,  Biology and management of Bemisia whitefly vectors of cassava virus pandemics in Africa
Journal Article 2014

Autor: Guastella, D. Tajebe, L. Evans, G. Fovo, F. Rapisarda, C. Legg, J.P.

Two Asian whiteflies, Aleurotrachelus tuberculatus Singh 1933 and Aleuroclava psidii (Singh 1931), are recorded for the first time in Africa. Both species were found on Psidium guajava L. (Myrtaceae) in the Coast and Dar es Salaam regions of Tanzania. It is not possible to determine when these sp...

Enlace original: https://cgspace.cgiar.org/handle/10568/76101

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Guastella, D. ,  Tajebe, L. ,  Evans, G. ,  Fovo, F. ,  Rapisarda, C. ,  Legg, J.P. ,  [First record of Aleuroclava psidii (Singh) and Aleurotrachelus tuberculatus Singh (Hemiptera: Aleyrodidae) in East Africa] ,  First record of Aleuroclava psidii (Singh) and Aleurotrachelus tuberculatus Singh (Hemiptera: Aleyrodidae) in East Africa
Journal Article 2015

Autor: Guastella, D. Lulah, H. Tajebe, L. Cavalieri, V. Evans, G. Pedata, P.A. Rapisarda, C. Legg, J.P.

Bemisia tabaci (Gennadius) is the vector of cassava mosaic geminiviruses (CMGs) and cassava brown streak viruses (CBSVs) in Africa, which cause devastating yield losses. As a prerequisite to developing biological control methods and enhancing knowledge of the fauna of whitefly parasitoids in sub-...

Enlace original: https://cgspace.cgiar.org/handle/10568/76102

Investigación en Agricultura
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Guastella, D. ,  Lulah, H. ,  Tajebe, L. ,  Cavalieri, V. ,  Evans, G. ,  Pedata, P.A. ,  Rapisarda, C. ,  Legg, J.P. ,  [Survey on whiteflies and their parasitoids in cassava mosaic pandemic areas of Tanzania using morphological and molecular techniques] ,  Survey on whiteflies and their parasitoids in cassava mosaic pandemic areas of Tanzania using morphological and molecular techniques
Journal Article 2015-09-15

Autor: Tajebe, L. Boni, S.B. Guastella, D. Cavalieri, V. Lund, O. Rugumamu, C.P. Rapisarda, C. Legg, J.P.

Bemisia tabaci (Gennadius) (Homoptera: Aleyrodidae), one of the most economically important agricultural pests worldwide, is the vector of cassava mosaic geminiviruses that cause cassava mosaic disease (CMD). In East and Central Africa, a severe CMD pandemic that spread from Uganda in the late 19...

Enlace original: https://cgspace.cgiar.org/handle/10568/76354

Investigación en Agricultura
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Tajebe, L. ,  Boni, S.B. ,  Guastella, D. ,  Cavalieri, V. ,  Lund, O. ,  Rugumamu, C.P. ,  Rapisarda, C. ,  Legg, J.P. ,  [Abundance, diversity and geographic distribution of cassava mosaic disease pandemic-associated Bemisia tabaci in Tanzania] ,  Abundance, diversity and geographic distribution of cassava mosaic disease pandemic-associated Bemisia tabaci in Tanzania

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