BBTV in Equatorial Guinea

Banana and Plantains are staple food crops in Equatorial Guinea. The occurrence of Banana bunchy top disease (BBTD) in Equatorial Guinea was first mentioned by Diekmann and putter (1996) although there is no data supporting the occurrence or the distribution of BBTD in this country. Later, BBTD Occurrence in Equatorial Guinea was reported by EPPO (2014). Surveys carried in 2016-17 by FAO – IITA revealed no BBTD symptomatic plants in mainland or in island (Fig 1) (FAO 2018). In general, BBTD were not detected in any of the 31 surveyed fields in the country.

Additionally, no virus was detected by molecular analysis done on all the 155 samples collected in Equatorial Guinea in both Mainland and Island. The regions of Cameroon and Gabon affected by BBTV are border with Equatorial Guinea. This underlines question about the absence of the disease in Equatorial Guinea since there are lots of human movement across borders usually with movement of planting materials. Although, no disease was detected in the country, constant surveillance, strict quarantine law and government support are needed to avoid the spread of BBTV through the transfer of non-certified planting material hence preventing introduction or spread of BBTD in Equatorial Guinea.

Figure 1. Map of BBTD Distribution in equatorial Guinea

Figure 1. Map of BBTD Distribution in equatorial Guinea



Diekmann D.R., Putter C.A.J. (1996) Musa, 2nd edn. FAO/IPGRI Technical Guidelines for the Safe Movement of Germplasm, N◦15. Food and Agriculture Organization of the United Nations. Rome/International Plant Genetic Resources Institute, Rome, 28 pp

EPPO, 2014. PQR database. Paris, France: European and Mediterranean Plant Protection Organization.

FAO, 2018. appui à la prévention et la gestion de la maladie de Bunchy top du Bananier (BBTD) au cameroun, au gabon et en guinée equatoriale. FAO Rome, 36pp

Kumar, P.L., Hanna, R., Alabi, O.J., Soko, M.M., Oben, T.T., Vangu, G.H.P., Naidu, R.A.
2011. Banana bunchy top virus in sub-Saharan Africa: investigations on virus distribution and diversity. Virus Research 159: 171–182. []

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