Author(s)

Kouka Hamidou Sogoba^1*, Tounwendsida Abel Nana¹, Alassane Ouattara¹, Mohamed Sana¹, Bawomon Fidèle Neya², Harouna Sawadogo¹, Kadidia Koïta¹

¹Laboratoire Biosciences, Département de biologie végétale et de physiologie végétale, Université Joseph KI-ZERBO, Ouagadougou, Burkina Faso.
²Centre Universitaire de Gaoua, Université Nazi Boni, Bobo-Dioulasso, Burkina Faso.

Prema 178 onion variety is widely used in production in Burkina Faso. It is greatly appreciated but susceptible to basal rot. This study aimed to evaluate the pathogenic ability of six strains of Fusarium genus identified in Burkina Faso on onion. Seeds, seedlings and bulbs were used for the test. A conidial suspension of each strain was made in tubes and adjusted to 1 × 10⁶ conidia/ml with distilled water for the different tests. Germination test in the laboratory and greenhouse showed that all treatments with the strains of Fusarium oxysporum f. sp. cepae, F. solani, F. falciforme, F. acutatum, F. proliferatum and F. sp. induced failure to emerge and showed a significant difference with the control. The different strains also induced stunting rates of coleoptile growth. Fusarium oxysporum f. sp. cepae, F. acutatum, F. proliferatum, F. falciforme and F. solani were very aggressive, as they recorded above 50% damping-off rates. The test on the bulbs revealed that the strains were classified into two groups. The first consists of F. oxysporum f. sp. cepae, F. solani, F. falciforme, F. acutatum, which caused rots with respective lengths from 2.06; 1.48; 1.84; 1.46 and 2.12 cm, thus very aggressive according to Ghanbarzadeh scale. The second is formed by F. proliferatum which recorded 0.90 cm of rot length, thus moderately aggressive. It would be appropriate to suggest a sustainable management method for these pathogens in order to improve the yield of onion production.

Fusarium spp., Pathogenicity, Allium cepa L., Burkina Faso

Sogoba, K. , Nana, T. , Ouattara, A. , Sana, M. , Neya, B. , Sawadogo, H. and Koïta, K. (2023) Assessing the Pathogenic Ability of Six Species of Fusarium Genus on Onion Variety in Burkina Faso. Agricultural Sciences, 14, 739-750. doi: 10.4236/as.2023.146049.