Field surveys in many cassava growing areas of Africa have assessed the incidence and severity of cassava mosaic disease (CMD), populations of the whitefly vector (Bemisia tabaci), and the distribution of cassava mosaic begomoviruses (CMBs). The methods employed differ greatly between countries a...
Sseruwagi, P.
,
Sserubombwe, W.S.
,
Legg, J.P.
,
Ndunguru, J.
,
Thresh, J.M.
,
[Methods of surveying the incidence and severity of cassava mosaic disease and whitefly vector populations on cassava in Africa: a review]
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Methods of surveying the incidence and severity of cassava mosaic disease and whitefly vector populations on cassava in Africa: a review
The extent of genetic variability and host-plant distribution of Bemisia tabaci (Gennadius) genotypes colonising cultivated and uncultivated plant species occurring adjacent to cassava fields in selected cassava-producing areas of Uganda in 2003/04 were investigated using the mitochondrial cytoch...
Sseruwagi, P.
,
Legg, J.P.
,
Maruthi, M.
,
Colvin, J.
,
Rey, M.
,
Brown, J.
,
[Genetic diversity of Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) populations and presence of the B biotype and a nonB biotype that can induce silverleaf symptoms in quash, in Uganda]
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Genetic diversity of Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) populations and presence of the B biotype and a nonB biotype that can induce silverleaf symptoms in quash, in Uganda
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 ...
Legg, J.P.
,
Sseruwagi, P.
,
Boniface, S.
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Okao-Okuja, G.
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Shirima, R.R.
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Bigirimana, S.
,
Gashaka, G.
,
Herrmann, H-W.
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Jeremiah, S.
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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]
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Spatiotemporal patterns of genetic change amongst populations of cassava Bemisia tabaci whiteflies driving virus pandemics in East and Central Africa
The cassava mosaic geminiviruses (CMGs) isolated from cassava plants expressing mild and severe symptoms of cassava mosaic disease (CMD) in 2002 in Uganda were investigated using the polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) molecular techniques and DNA seq...
Sseruwagi, P.
,
Rey, M.E.C.
,
Brown, J.K.
,
Legg, J.P.
,
[The cassava mosaic geminiviruses occurring in Uganda following the 1990s epidemic of severe cassava mosaic disease]
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The cassava mosaic geminiviruses occurring in Uganda following the 1990s epidemic of severe cassava mosaic disease
Cassava mosaic disease (CMD), and cassava mosaic geminiviruses (CMGs), were investigated in a country-wide survey conducted in six cassava-producing prefectures (administrative regions) of Rwanda in 2001. CMD occurred throughout the country at an average incidence of 30%. Incidence was highest in...
Sseruwagi, P.
,
Okao-Okuja, G.
,
Kalyebi, A.
,
Muyango, S.
,
Aggarwal, V.
,
Legg, J.P.
,
[Cassava mosaic geminiviruses associated with cassava mosaic disease in Rwanda]
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Cassava mosaic geminiviruses associated with cassava mosaic disease in Rwanda