Mechanical transmissibility and pathogenic effect of a mosaic disease of &lt;i&gt;Commelina benghalensis&lt;/i&gt; L. in Cowpea, &lt;i&gt;Vigna unguiculata&lt;/i&gt; (L) Walp

Balogun, O. O.; Aliyu, TH

doi:10.4314/jard.v4i2.42178

Cited by 2 publications

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“…The results in the present study support earlier observations and reports of Balogun and Aliyu (2005) that the broad-leaf weed, C. benghalensis, naturally infected with the yellow mosaic disease could serve as a potent reservoir for the causal agent and a source of inoculum for transmission to susceptible arable crops. More over, the fact that the viral agent was easily transmitted by rubbing the juice from the infected weed, on cowpea leaf, under ambient screenhouse conditions makes it highly plausible that transmission through farm operations, such as manual weeding, which is still widely practiced under the vastly subsistent farming system in sub-Saharan Africa, was a possibility.…”

Section: Comparative Percentage Yield Losssupporting

confidence: 92%

Influence of Seedling Age at Inoculation and Cultivar on the Pathogenicity of a Virus Causing Yellow Mosaic Disease of Commelina Benghalensis L. on Cowpea

Aliyu¹,

Balogun²,

Arogundade³

2010

JAS

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A screenhouse experiment was conducted to evaluate the influence of seedling age at inoculation and cultivar on pathogenicity of the virus causing yellow mosaic disease of Commelina benghalensis L, a broad leaf weed, on cowpea. Three cowpea varieties namely Vita 5, IT84S2246D and Ife Brown were grown in pots and inoculated with sap extracted from leaves of C. benghalensis infected with yellow mosaic disease at 7, 14, and 21 days after germination (DAG). It was found that inoculation of cowpea seedlings at 7 DAG subsequently led to the most severe symptoms, which were manifested by mosaic and yellowing of leaves and eventual poor growth and yield attributes. On the other hand, plant growth and yield attributes that were comparable to those of the healthy control plants were recorded for plants inoculated at 21 DAG. Specifically, in regards to the interaction effects, cv. Vita 5 that were sap-inoculated at 7 DAG had the lowest yield attributes, while cv. IT84S2246D inoculated at 21 DAG had the highest yield attributes. The results put together showed that although the yellow mosaic virus of C. benghalensis was sap-transmissible and pathogenic to cowpea causing characteristic yellow mosaic disease symptoms and reduction in yield attributes, severity of the disease is less if infection occurs at older stage of cowpea growth.

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Section: Comparative Percentage Yield Losssupporting

confidence: 92%

Influence of Seedling Age at Inoculation and Cultivar on the Pathogenicity of a Virus Causing Yellow Mosaic Disease of Commelina Benghalensis L. on Cowpea

Aliyu¹,

Balogun²,

Arogundade³

2010

JAS

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“…The infected leaf sample was extracted by homogenization using mortar and pestle in 0.05M phosphate buffer, at pH 7.2 at the rate of 1g leaf sample to 5ml of buffer ( Balogun and Aliyu 2005). All cowpea plants used in the study were inoculated with CMV at 14days nd after planting, when the plants were at the 2 leaf stage.…”

Section: Sourcing Of Inoculum and Inoculation Proceduresmentioning

confidence: 99%

Pathogenic Responses of Cowpea (<i>Vigna unguiculata</i>) Inoculated with Cucumber Mosaic Virus to Soil Amendment with Neem Leaf Powder

Aliyu¹,

Balogun²,

Adeoti³

2012

Agrosearch

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Mechanical transmissibility and pathogenic effect of a mosaic disease of <i>Commelina benghalensis</i> L. in Cowpea, <i>Vigna unguiculata</i> (L) Walp

Cited by 2 publications

References 0 publications

Influence of Seedling Age at Inoculation and Cultivar on the Pathogenicity of a Virus Causing Yellow Mosaic Disease of Commelina Benghalensis L. on Cowpea

Influence of Seedling Age at Inoculation and Cultivar on the Pathogenicity of a Virus Causing Yellow Mosaic Disease of Commelina Benghalensis L. on Cowpea

Pathogenic Responses of Cowpea (<i>Vigna unguiculata</i>) Inoculated with Cucumber Mosaic Virus to Soil Amendment with Neem Leaf Powder

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