[ Deux variétés d’oignon (Allium cepa L.) tolérantes à la pourriture basale fusarienne au Burkina Faso ]
Volume 39, Issue 2, April 2023, Pages 617–630
Tobdem Gaston DABIRE1, Stéphane Dabire2, Schémaéza Bonzi3, and Irénée Somda4
1 Université Polytechnique de Bobo-Dioulasso, Institut du Développement Rural, BP 1091, Bobo-Dioulasso, Burkina Faso
2 Université Nazi Boni, Laboratoire des Systèmes Naturelles, Agrosystèmes et Ingénierie de l’Environnement, Bobo-Dioulasso, Burkina Faso
3 Université Nazi Boni, Laboratoire des Systèmes Naturelles, Agrosystèmes et Ingénierie de l’Environnement, Bobo-Dioulasso, Burkina Faso
4 Université Polytechnique de Bobo-Dioulasso, Institut du Développement Rural, BP 1091, Bobo-Dioulasso, Burkina Faso
Original language: French
Copyright © 2023 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Onion bulbs production and commercialization is now a powerful tool against poverty in rural areas in Burkina Faso. However, Fusarium basal rot disease caused by a complex of soilborne fungi appears to be a serious threat to growers. The prophylactic methods proposed for its control remain difficult to apply effectively and the most used varieties of onion are susceptible to the disease. In order to work out a palliative solution to this problem, eleven onion varieties marketed in Burkina Faso were screened for their tolerance to fusarium basal rot. The varieties were produced in infested rural area on completely randomized blocs by three producers in three different sites. The harvested bulbs were then tested in the laboratory under artificial inoculation conditions with conidial suspensions of Fusarium oxysporum and F. solani, responsible for the disease. In field, the Noflaye and Gandiol+ varieties were the most tolerant to the disease with respective incidence values of 0 and 1.6% while the Mercedes variety was the most sensitive with an incidence of 16,5%. In the laboratory, all the inoculated varieties developed rot at varying intensities, but the Noflaye and Gandiol+ varieties were still the least rotten. These results recommend the continuation of investigations on these two varieties with a view to their integration into an integrated control program against Fusarium basal rot disease of onion in Burkina Faso.
Author Keywords: Onion, Fusarium basal rot, Varieties, Noflaye, Gandiol+, Burkina Faso.
Volume 39, Issue 2, April 2023, Pages 617–630
Tobdem Gaston DABIRE1, Stéphane Dabire2, Schémaéza Bonzi3, and Irénée Somda4
1 Université Polytechnique de Bobo-Dioulasso, Institut du Développement Rural, BP 1091, Bobo-Dioulasso, Burkina Faso
2 Université Nazi Boni, Laboratoire des Systèmes Naturelles, Agrosystèmes et Ingénierie de l’Environnement, Bobo-Dioulasso, Burkina Faso
3 Université Nazi Boni, Laboratoire des Systèmes Naturelles, Agrosystèmes et Ingénierie de l’Environnement, Bobo-Dioulasso, Burkina Faso
4 Université Polytechnique de Bobo-Dioulasso, Institut du Développement Rural, BP 1091, Bobo-Dioulasso, Burkina Faso
Original language: French
Copyright © 2023 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Onion bulbs production and commercialization is now a powerful tool against poverty in rural areas in Burkina Faso. However, Fusarium basal rot disease caused by a complex of soilborne fungi appears to be a serious threat to growers. The prophylactic methods proposed for its control remain difficult to apply effectively and the most used varieties of onion are susceptible to the disease. In order to work out a palliative solution to this problem, eleven onion varieties marketed in Burkina Faso were screened for their tolerance to fusarium basal rot. The varieties were produced in infested rural area on completely randomized blocs by three producers in three different sites. The harvested bulbs were then tested in the laboratory under artificial inoculation conditions with conidial suspensions of Fusarium oxysporum and F. solani, responsible for the disease. In field, the Noflaye and Gandiol+ varieties were the most tolerant to the disease with respective incidence values of 0 and 1.6% while the Mercedes variety was the most sensitive with an incidence of 16,5%. In the laboratory, all the inoculated varieties developed rot at varying intensities, but the Noflaye and Gandiol+ varieties were still the least rotten. These results recommend the continuation of investigations on these two varieties with a view to their integration into an integrated control program against Fusarium basal rot disease of onion in Burkina Faso.
Author Keywords: Onion, Fusarium basal rot, Varieties, Noflaye, Gandiol+, Burkina Faso.
Abstract: (french)
La production et la commercialisation des bulbes d’oignon constituent de nos jours un puissant outil de lutte contre la pauvreté en milieu rural au Burkina Faso. Cependant, la maladie de la pourriture basale fusarienne causée par un complexe de champignons telluriques apparait comme une menace sérieuse pour les producteurs. Les méthodes prophylactiques proposées pour son contrôle demeurent difficiles à appliquer avec efficacité et les variétés d’oignon les plus utilisées sont sensibles à la maladie. En vue de contribuer à trouver une solution palliative à ce problème, onze variétés d’oignon commercialisées au Burkina Faso ont été criblées pour apprécier leur comportement vis-à-vis de la pourriture basale fusarienne. Les variétés ont été produites en milieu paysan infesté par la maladie en Blocs complètement randomisés par trois producteurs de trois sites différents. Les bulbes récoltés ont ensuite été testés en laboratoire en conditions d’inoculation artificielle avec des suspensions conidiennes de Fusarium oxysporum et F. solani, responsables de la maladie. Au champ, les variétés Noflaye et Gandiol+ ont été les plus tolérantes à la maladie avec des incidences respectives de 0 et 1,6% tandis que la variété Mercedes a été la plus sensible avec une incidence de 16,5%. Au laboratoire, toutes les variétés inoculées ont développé des pourritures à des intensités variables mais les variétés Noflaye et Gandiol+ ont encore été les moins pourries. Ces résultats recommandent la poursuite des investigations sur ces deux variétés en vue de leur intégration dans un programme de lutte intégrée contre la pourriture basale fusarienne de l’oignon.
Author Keywords: Oignon, Pourriture basale fusarienne, Variétés, Noflaye, Gandiol+, Burkina Faso.
How to Cite this Article
Tobdem Gaston DABIRE, Stéphane Dabire, Schémaéza Bonzi, and Irénée Somda, “Two onion’s varieties (Allium cepa L.) tolerant to Fusarium basal rot disease in Burkina Faso,” International Journal of Innovation and Applied Studies, vol. 39, no. 2, pp. 617–630, April 2023.
