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First report of Grapevine yellow speckle viroid 1, Grapevine yellow speckle viroid 2, and Hop stunt viroid infecting grapevines (Vitis spp.) in Nigeria.

Zongoma, A. M. ; Dangora, D. B. ; Rwahnih, M. A. ; Bako, S. P. ; Alegbejo, M. D. ; Alabi, O. J.

Plant Disease 2018 Vol 102 No. 1 pp. 259;

Abstract

During 2016, surveys were conducted in the Northern Guinea Savannah agroecological zone of Nigeria to document the occurrence of grapevine viruses and viroids. A total of 318 leaf tissue samples belonging to 5 cultivars were collected during the survey across 28 vineyards and analysed in the laboratory. The presence of Grapevine yellow speckle viroid 1, Grapevine yellow speckle viroid 2 and Hop stunt viroid were detected based on various molecular analyses. This is thought to be the first report of these viroids infecting grapevine in Nigeria.