Identification of resistance to Yam mosaic virus (YMV), genus Potyvirus in white Guinea yam (Dioscorea rotundata Poir.)

Odu, B. O.; Asiedu, Robert; Hughes, J.; Shoyinka, S. A.; Oladiran, Oluyinka Abimbola

doi:10.1016/j.fcr.2004.01.009

Cited by 20 publications

(27 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Research at IITA and other institutions has resulted in the identification of host plant resistance to some of the major pests of yams-nematodes in D. dumetorum (Mohandas et al 1996;Kwoseh 2000;Kwoseh et al 2007), viruses in D. rotundata (Mignouna et al 2001b;Odu et al 2004aOdu et al , b, 2006a and anthracnose in D. alata (Mignouna et al 2001a;Abang et al 2003;Malapa et al 2005;Onyeka et al 2006, Egesi et al 2007). The genetic basis of the resistance to a major Nigerian strain of Yam Mosaic Virus (YMV), genus Potyvirus, was investigated in D. rotundata (Mignouna et al 2001a).…”

Section: Genetic Improvementmentioning

confidence: 97%

“…Resistance to viruses in white yam (e.g. Dioscorea alata virus (DAV), genus Potyvirus; Dioscorea alata bacilliform virus (DaBV), genus Badnavirus; and Cucumber mosaic virus (CMV), genus Cucumovirus) (Odu et al 2004a) and anthracnose in water yam have been introduced to new varieties that combine these with high yield and good tuber quality (Asiedu et al 1998(Asiedu et al , 1999. Deployment of the foregoing examples of host plant resistance will be aided by complementary studies on the pathogens (Abang et al 2003).…”

Section: Genetic Improvementmentioning

confidence: 99%

See 1 more Smart Citation

Crops that feed the World 1. Yams

Asiedu¹,

Sartie²

2010

Food Sec.

190

115

View full text Add to dashboard Cite

Yam (Dioscorea sp.) is a major source of food for millions of people in tropical and sub-tropical regions, especially in West and Central Africa where at least 60 million people depend on it. It is also a major source of income and an integral part of socio-cultural life. In addition to their food uses, some Dioscorea species are exploited for pharmaceutical products. Yam cultivation is undergoing intensification in many production zones leading to challenges in the management of soil fertility and structure, increasing pressure of diseases and pests (including weeds), and requirements for new varieties better suited to the changing biophysical and socio-economic circumstances. Greater attention also needs to be paid to raising labor productivity and improving access of producers to affordable and higher quality planting materials. These challenges, and the opportunities associated with the biology of the crop, need to be addressed more systematically and earnestly through collaborative research and development, and effective dissemination of the results to relevant stakeholders. The increasing capacity for, and international collaboration in, research and development on yam augur well for the future of the crop and the millions of people who depend on it.

show abstract

Section: Genetic Improvementmentioning

confidence: 97%

Section: Genetic Improvementmentioning

confidence: 99%

Crops that feed the World 1. Yams

Asiedu¹,

Sartie²

2010

Food Sec.

190

115

View full text Add to dashboard Cite

show abstract

“…The disease assessment was done at five months after planting (MAP) at Fumesua and six months after planting (MAP) at Ejura in 2012 and 2013. Disease severity was done by visual scoring as described by Migouna et al (2001) and Odu et al (2004) using a scale of 1-5 where 1 represented apparently no symptoms, 2 -mild symptoms, 3 -moderately severe symptoms, 4 -severe symptoms and 5 -very severe symptoms. Data collected for all the studies were subjected to analysis of variance at 5% significant level using the Statistical Analysis Software (SAS, 2007).…”

Section: Methodsmentioning

confidence: 99%

Staking Options for Sustainable Yam Production in Ghana

Danquah¹,

Ennin²,

Lamptey³

et al. 2014

SAR

View full text Add to dashboard Cite

The study evaluated staking options to address the problem of deforestation for sustainable yam production in the Forest and Forest-Savannah Transition zones of Ghana. A split-plot design with three yam varieties (Dente, Water Yam and TDR95/19177 line) and three staking options (No staking, Vertical staking and Trellis with 50% and 30% number of vertical stakes for 2012 and 2013 respectively) as main plots and subplots respectively were used. Results revealed a significant (P < 0.05) interaction between yam variety and staking options on yam tuber yields in both locations and years. While water yam had similar tuber yields under all staking options, Dente and TDR95/19177 under no staking had significant yield reductions ranging from 37 to 65% compared to the other staking options. The observed yield reduction under no staking of Dente and TDR95/19177 could be attributed to higher incidence of yam mosaic virus leading to significantly lower fresh leaf biomass production. Reducing the number of stakes in trellis to as low as 30% of the vertical/optimum staking option did not result in a significant reduction in tuber yields for TDR95/19177 and Water yam. The economic analysis revealed that it is more profitable to produce water yam and TDR95/19177 under no staking and trellis (50% and 30% number of optimum staking) respectively in both locations. The results suggest trellis/minimum staking can be used to minimize the use of stakes, yam mosaic virus disease infection and for sustainable yam production in the face of climate change.

show abstract

“…The tuber, the edible plant structure, 70 has a high nutritional quality and astringent, antimi-71 crobial and diuretic properties, which allow its use for 72 combating malnutrition and treatment of diseases such 73 as diabetes and high cholesterol levels (Ramos-74 Escudero et al 2010). The main limiting factor for 75 growing D. trifida is potyviruses (genus Potyvirus, 76 family Potiviridae), which causes a variety of symp-77 toms on the leaves of infected plants (Odu et al 2004). 78 Potyvirus infection can cause significant economic 79 damage and process of genetic erosion of the crop 80 (Bousalem et al 2010).…”

mentioning

confidence: 99%