The association between root necrosis and above‐ground symptoms of brown streak virus infection of cassava in southern Tanzania

Hillocks, R. J.; Raya, M. D.; Thresh, J. M.

doi:10.1080/09670879609372008

Cited by 76 publications

(54 citation statements)

References 2 publications

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“…Similar observations have been reported (Hillocks et al, 1996). The significant influence of whitefly on both CBSD and CMD disease indices concur with previous reports (Alicai et al, 2007;Maruthi et al, 2005;Ntawuruhunga and Legg, 2007) that the whitefly, B. tabaci is responsible for unlimited spread of the diseases throughout the Central, East and Southern parts of Africa.…”

Section: Discussionsupporting

confidence: 81%

Response of Selected Cassava Varieties to the Incidence and Severity of Cassava Brown Streak Disease in Tanzania

Rwegasira¹,

Rey²

2012

JAS

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Cassava brown streak virus disease (CBSD) has been a serious and most damaging disease in cassava crop throughout the East, Central and Southern part of Africa. Several cassava varieties invariably respond to the disease, but the effect of the disease on affected varieties was not known. The current study was conducted to assess the ability of some farmer-preferred CBSD-affected varieties to withstand the disease. Field experiments were conducted at Kibaha Agricultural Research station from 2006 to 2008. The inherent variety characteristics influenced the incidence and severity levels of CBSD in the test plants. Leaf and stem CBSD incidences and severities, root weight and number of whiteflies (vectors) were significantly (P<0.001) related to the individual variety. Varieties Albert, Cheupe, Kibaha and Nachinyaya were seriously affected. The CBSD incidences and severities in these varieties increased with plant age, with highest disease records starting at nine to twelve months after planting. Dual infections of CBSD and CMD were recorded in four (Cheupe, Kibaha, Namikonga and Nachinyaya) of the five test varieties. Namikonga was proven to be resistant to CBSD. The correlation analysis suggested a significantly positive relationship between the perceived disease vector, Bemisia tabaci and the incidence and severities of CBSD and CMD. It was concluded that different varieties responds differently to CBSD and the disease severity increases with plant age.

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Section: Discussionsupporting

confidence: 81%

Response of Selected Cassava Varieties to the Incidence and Severity of Cassava Brown Streak Disease in Tanzania

Rwegasira¹,

Rey²

2012

JAS

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“…Analysis of these pigments showed that the top-most leaves had higher levels compared to the yellow and brown chlorotic leaves at the bottom of the plant. This may explain the observations made by Hillocks et al (1996), that the virus affects mostly mature or nearly mature leaves. Therefore, the losses in leaf pigmentation that occur, alongside viral infection, affect mature leaf physiology and hamper leaf based growth and developmental responses.…”

Section: Leaf Pigment Contentsmentioning

confidence: 53%

Cassava brown streak disease effects on leaf metabolites and pigment accumulation

Nuwamanya¹,

Baguma²,

Atwijukire³

et al. 2017

Afr. Crop Sci. J.

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“…The symptom severity differed between susceptible varieties. In particular, variety MTAI 25 was highly susceptible with early CBSD symptoms followed by dieback of the scions-an observation previously made in the field on highly susceptible cassava varieties (Hillocks et al, 1996;Hillocks et al, 2001) Table 2). …”

Section: Identification Of Cassava Genotypes Resistant To Cbsdmentioning

confidence: 89%

Characterization of Brown Streak Virus–Resistant Cassava

Anjanappa

Mehta

Maruthi

et al. 2016

MPMI

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The association between root necrosis and above‐ground symptoms of brown streak virus infection of cassava in southern Tanzania

Cited by 76 publications

References 2 publications

Response of Selected Cassava Varieties to the Incidence and Severity of Cassava Brown Streak Disease in Tanzania

Response of Selected Cassava Varieties to the Incidence and Severity of Cassava Brown Streak Disease in Tanzania

Cassava brown streak disease effects on leaf metabolites and pigment accumulation

Characterization of Brown Streak Virus–Resistant Cassava

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