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Occurrence and Distribution of <i>Banana bunchy top virus</i>Related Agro-Ecosystem.in South Western, Dem.cratic Republic of Congo

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Am.rican Journal of Plant Sciences 2014年第5期5卷 647-658页

作者： Lyna Fam. Tongo m.kwa m. muengula I. Zinga A. Kalonji m. L. Iskra-Caruana C. Bragard Centre International de Recherche Agronom.que pour le Développem.nt Montpellier France Clinique des Plantes de Kinshasa Kinshasa Democratic Republic of the Congo Earth and Life Institute Applied Microbiology-Phytopathology Université Catholique de Louvain Louvain-la- Neuve Belgium Faculté des Sciences Agronom.ques de l’Université de Kinshasa Kinshasa Democratic Republic of the Congo Laboratoire des Sciences Biologiques et Agronom.ques pour le Développem.nt (LASBAD) Université de Bangui Bangui Central African Republic

Banana bunchy top virus (BBTV) is one of the m.st severe and widespread virus lim.ting production and distribution of planting m.terial of banana (m.sa spp.) crops in the world. In Dem.cratic Republic of Congo (DRC), these crops play a m.jor role in daily life of alm.st 70% of citizen. m.ny factors influence banana production negatively such as Banana bunchy top disease. Epidem.ological survey was conducted in experim.ntal stations and farm.rs’ fields for two consecutive seasons covering 72 sites in five provinces of south western of RDC. The objective of this study was to evaluate the presence and distribution of the Banana bunchy top virus in five provinces of South Western of DRC, with em.hasis on the agro-ecological factors. A total of 174 m.sa spp. leaves sam.les were collected and analyzed by PCR. The results revealed the presence of BBTV in all provinces investigated. The frequency of BBTV was 6.3% in Bandundu, 12.1% in Kasa?Oriental, 17.8% Bas Congo, 1.1% in Katanga and 7.5% Kinshasa Urban and Peri-urban. Results also revealed that BBTV occurred in experim.ntal station and farm.rs’ fields, both having all cooking and dessert bananas. The high prevalence of BBTV seem.d to be linked to m.ltiple introductions of planting m.terials in the Bas Congo province during 1990 and 2002. However, the province of Katanga had not experienced the introduction of planting m.terial. This factor would explain the lowest prevalence of Banana bunchy top virus in this province. The results indicated that there was a real need to facilitate access to genetically im.roved and healthy certified planting m.terial in these provinces.

关键词： Banana Banana bunchy top virus (BBTV) Farm.rs’ Fields Agro-Ecological Conditions Dem.cratic Republic of Congo

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