First report of Banana bunchy top disease (BBTD) on Banana (Saba variety) in Cagayan Valley Region, Philippines

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Research Paper 12/06/2023
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First report of Banana bunchy top disease (BBTD) on Banana (Saba variety) in Cagayan Valley Region, Philippines

Angelina T. Gonzales, Diosa G. Alasaas, Ricardo B. Casauay
Int. J. Biosci.22( 6), 117-122, June 2023.
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Abstract

The study on the occurrence and symptomatology of banana bunchy top disease (BBTD) was conducted to determine the occurrence and study the symptoms and associated signs that characterized BBTD in the banana farms in the province of Cagayan, Philippines. A survey and mapping were used to the major banana growing municipalities namely: Allacapan, Lasam, Gattaran and Baggao, in the province of Cagayan, North-eastern part of the Philippines. The data were analyzed using the frequency counts, weighted means, and percentages. The geo-referenced locations of the banana farms were analyzed using the QGIS software. BBTD – infected plants were described, occurrence was mapped and associated insect vector was investigated Results revealed that the most observable symptoms in the field involved stunting, ragged margins, upturned leaves, chlorotic reducing lamina width, petiole length and distance of the leaves. The whole growing banana plants may grow but obviously resulting to stunting. Banana crops that are infected with BBTV in the vegetative phase will not produce fruit. Black aphids (Pentalonia nigronervosa) are found always associated with the banana plants and thus transmit the virus. Ocurrence of BBTD was determined in September 2020 to September 2021 at Allacapan, Lasam, Gattaran and Baggao, Cagayan barangays/locations while typical symptoms of BBTD were first observed in all of the banana growing locations in the province of Cagayan, Philippines. Symptomatology and association of aphids confirmed the presence of BBTD. This is thought to be the first report of BBTD on banana (Musa spp.) in the province of Cagayan, Philippines.

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