Potato viruses on cultivated Solanaceae species in mix and sole cropping systems in Cameroon

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Potato viruses on cultivated Solanaceae species in mix and sole cropping systems in Cameroon

Godwill Mih Chewachong, Nchongboh Chofong Gilbert, Achiangia Patrick Njukeng
Int. J. Agron. Agri. Res.16( 3), 24-37, March 2020.
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The role of potato in assuring food security of poor resource farmers in the Western Highlands of Cameroon cannot be over emphasized. Unfortunately, the incidence of potato viruses remains a major limiting factor threat­ening sustainable potato produc­tion in Cameroon. The prevalence of six potato viruses; Potato virus X (PVX), Potato virus A (PVA), Potato leaf roll virus (PLRV), Potato virus Y (PVY), Potato virus M (PVM) and Potato virus S (PVS) was evaluated in the western highlands of Cameroon. Surveys of these viruses were conducted in four Solanaceae species; Solanium tuberosum, S. scabrum, S. capsicum, Lycopersicon esculentum, in sole and mixed cropping systems. They were identified and assayed by Nitrocellulose Membrane Enzyme Linked Immunosorbent Assay (NCM-ELISA) for the prevalence of viruses. NCM-ELISA tests revealed that the six viruses infect Solanaceae species to a varying extent. Potato virus Y (PVY) was predominant followed by Potato virus X (PVX), Potato virus A (PVA), Potato virus S (PVS), Potato virus M (PVM) and Potato leaf roll virus (PLRV). Mixed and single infections were recorded. Our results also showed single, double, triple, quadruple and quintuple infections at 41.89, 21.78, 16.2, 17.87 and 2.23%, respectively. Information obtained from this research will serve as the basis for developing effective control measures against these viruses.


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