Prévalence du Banana Bunchy Top Disease (BBTD) dans la zone de Ntoum au Gabon

Ondh-Obame, Jean Alban; Ndong, Auguste Ndoutoume; Ndoutoumou, Pamphile Nguema; Assembe, Priscilla Chancia Mindze; Minko, Ignace Davy Mendoume; Bello, Kowir Pambo

doi:10.4314/ijbcs.v14i3.8

Cited by 5 publications

(3 citation statements)

References 12 publications

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“…Selon la FAO, en Afrique centrale, les bananes représentent l'un des produits de base de l'alimentation des populations avec un apport en calories de 35% environ. Les bananes desserts et les plantains assurent la sécurité alimentaire de plusieurs millions de personnes dans les régions intertropicales du monde et les profits générés par leur culture sont estimés à plus de 50 milliards de dollars américains en 2017 (Ondh-Obame et al, 2020). En RDC, les bananes occupent le premier rang de la production fruitière et constituent une culture jouant un rôle dans la sécurité alimentaire (Dhed'a et al, 2019).…”

Section: Introductionunclassified

Evaluation de la productivité des bananiers au deuxième cycle cultural, installés en couloir des légumineuses arborescentes au Plateau des Batéké (Kinshasa, RD Congo).

Bangata Bitha Nyi Mbunzu

2023

Rev. Cong. Sci. Technol

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Dans le contexte de changement climatique, le système sylvobananier est une réponse favorable d’une part aux problèmes de l’intensification de la production de bananes, à la préservation des forêts, surtout dans les régions où la déforestation est accrue d’autre part. L’objectif de cette étude était d’améliorer la production de bananiers au plateau des Batéké. Cinq cultivars de bananiers ont été intégrés en culture intercalaire avec quatre légumineuses forestières arborescentes âgées de deux ans. Après la récolte du premier cycle, les pieds reproducteurs ont été remplacés par les rejets successeurs. Les analyses multivariées, particulièrement, l’analyse en composantes principale (ACP), a permis de démontrer la corrélation existante entre les associations bananiers-légumineuses arborescentes et les caractéristiques des rejets successeurs des cultivars de bananiers évaluées. Au regard des résultats obtenus, il est à noter que les associations formées avec les légumineuses arborescentes Pterocarpus indicus Wild, Milletia laurentii et Inga edulis Mart se sont révélées les plus performantes au deuxième cycle cultural de bananier, il s’agit respectivement des associations : Nsikumuna avec Pterocarpus indicus Wild ; suivi de Nsikumuna avec Milletia laurentii et de Gros Michel avec Pterocarpus indicus Wild. Ces combinaisons peuvent être recommandées aux producteurs afin de rentabiliser et de pérenniser la production de bananes dans le plateau de Batéké. Cependant, la contreperformance a plus été observée sur les associations formées avec l’espèce Acacia auriculiformus Benth.

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Section: Introductionunclassified

Evaluation de la productivité des bananiers au deuxième cycle cultural, installés en couloir des légumineuses arborescentes au Plateau des Batéké (Kinshasa, RD Congo).

Bangata Bitha Nyi Mbunzu

2023

Rev. Cong. Sci. Technol

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“…Banana bunchy top disease (BBTD), an invasive and devastating disease caused by the banana bunchy top virus (BBTV, Babuvirus, Nanoviridae), spread by seed and the banana aphid, Pentalonia nigronervosa. It threatens banana production and these secondary diversity centers of Musa [10][11][12][13]. BBTD is widespread in sub-Saharan Africa and is present in most major banana-producing regions of the world, except Central and South America [11].…”

Section: Introductionmentioning

confidence: 99%

Variation in Symptom Development and Infectivity of Banana Bunchy Top Disease among Four Cultivars of Musa sp.

Chabi

Dassou

Adoukonou‐Sagbadja

et al. 2023

Crops

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Banana bunchy top disease (BBTD) is an invasive viral disease spreading in Africa. It is transmitted by banana aphids and infected planting material, causing production losses. Clean seeds and timely eradication of diseased plants are effective tools in BBTD management. These depend on timely disease detection. We assessed the relationship between symptom expression and infectivity of the virus in four cultivars of banana. Plantlets from four cultivars, ‘FHIA 25’; ‘Aloga’; ‘Ebenga’ and ‘Sotoumon’, were exposed to viruliferous aphids and monitored for symptom expression. They were also tested as sources for virus transmission fortnightly by allowing non-viruliferous aphids acquisition access prior to transfer to healthy test plants. The time required to show symptoms and the symptom expression were compared, and infection tested by PCR. Disease expression varied from four weeks in ‘FHIA 25’ to fifteen in ‘Sotoumon’. Only the symptomatic leaves tested positive and could act as infection sources. Overall, ‘FHIA 25’ was the most susceptible cultivar, while ‘Sotoumon’ was the least susceptible and most rapidly expressive of BBTD, yet there was no difference in the leaf emergence rate between the cultivars. These results present important aspects of BBTD control and the safety of planting materials that should be tested in the field.

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“…Banana Bunchy Top Disease (BBTD) is a spreading and devastating viral disease that hinders banana production worldwide [13]. This disease is transmitted by planting infected seeds and aphids, causing a progressive production loss and simultaneous decrease in the availability of healthy planting healthy seeds for new banana plantations' establishment or rehabilitation of lost ones [14].…”

Section: Introductionmentioning

confidence: 99%

Variation in Symptom Development and Infectivity of the Banana Bunchy top disease on four varieties of Musa sp.

Chabi

Dassou

Adoukonou‐Sagbadja

et al. 2022

Preprint

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Banana bunchy top disease (BBTD), is a viral disease of banana, rapidly spreading in Africa. It affects production and seed systems, threatening the genetic diversity of banana and plantain. Early symptomatic detection and roguing are an effective way of managing this disease. However seasonal and cultivar variation in disease expression has been observed. We therefore sought to assess the relationship between symptom expression and infectivity of diseased plants to support refining roguing protocols. Plantlets from four varieties (FHIA 25; Aloga; Ebenga and Sotoumon) were inoculated using infected aphids and monitored for nineteen weeks. The plants were also used as inoculum sources to infect clean banana aphids that were transferred to healthy plants of a single variety every two weeks. An appearance of symptom in these test plants was recorded and infection tested by PCR. The hybrid FHIA 25 showed typical BBTD symptoms three weeks after inoculation, while the plantains Aloga and Ebenga showed the morse code symptom, on the leaf lamina but not on the petiole, four weeks after inoculation. The banana local variety, Sotoumon, only showed the first symptoms fifteen weeks later, and entirely missed the earlier typical symptoms. For all varieties, BBTV was only detectable and aphid transferable from plants showing the first symptoms. Overall, FHIA 25 was the most sensitive while the local banana Sotoumon the least sensitive to BBTV inoculation. The expression and spread of BBTD could be tested in the field. We discuss the implication of these observations on seed systems production losses.

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Prévalence du Banana Bunchy Top Disease (BBTD) dans la zone de Ntoum au Gabon

Cited by 5 publications

References 12 publications

Evaluation de la productivité des bananiers au deuxième cycle cultural, installés en couloir des légumineuses arborescentes au Plateau des Batéké (Kinshasa, RD Congo).

Evaluation de la productivité des bananiers au deuxième cycle cultural, installés en couloir des légumineuses arborescentes au Plateau des Batéké (Kinshasa, RD Congo).

Variation in Symptom Development and Infectivity of Banana Bunchy Top Disease among Four Cultivars of Musa sp.

Variation in Symptom Development and Infectivity of the Banana Bunchy top disease on four varieties of Musa sp.

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