Volume 25, Issue 2, July 2016, Pages 562–575
Tobdem Gaston DABIRE1, Schémaeza BONZI2, Irénée Somda3, and Anne LEGREVE4
1 Université Polytechnique de Bobo-Dioulasso, Institut du Développement Rural, BP 1091, Bobo-Dioulasso, Burkina Faso
2 Université Polytechnique de Bobo-Dioulasso, Institut du Développement Rural, BP 1091, Bobo-Dioulasso, Burkina Faso
3 Université Polytechnique de Bobo-Dioulasso, Institut du Développement Rural, BP 1091, Bobo-Dioulasso, Burkina Faso
4 Université Catholique de Louvain-la-Neuve, Faculté des Bio ingénieurs, Earth and Life Institute, Croix du Sud 2 box L7.05.03, 1348 Louvain-la-Neuve, Belgium
Original language: English
Copyright © 2016 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.
This study was carried out to assess the seed-borne fungi of onion in Burkina Faso. Eighteen onion seed samples were collected from local farmers and wholesalers of vegetable seeds in the country and were investigated for fungi. The investigation was done using the “blotter method” on dry seeds and on seedlings. Fungal contamination was detected in all 18 tested samples. Seventeen fungal species belonging to 11 fungal genera were identified in the seed samples: Aspergillus was detected in 17 samples, Fusarium and Rhizopus in 15 samples, Cladosporium in 14 samples and Penicillium in 13 samples. Aspergillus niger and Fusarium oxysporum, known to be the causal agents of black mould and basal rot diseases, were detected in 17 and 11 samples, respectively, by seed analysis and in 10 and 9 samples, respectively, by seedling analysis. The infection rates by the fungal species varied from 0 to 90.3% for A. niger and from 0 to 13.5% for F. oxysporum. Alternaria porri, the causal agent of purple blotch disease was recorded lowly on two seed samples at infection rates of 0,5 and 1%. Exotic seed samples showed better health quality compared to local seed samples. These results indicated that the seeds locally produced by farmers in Burkina Faso are for low health quality and needs strong treatments before use to avoid diseases appearance in fields.
Author Keywords: Onion, Seed Health, infection rate, Aspergillus niger, Fusarium oxysporum, Burkina Faso.
Tobdem Gaston DABIRE1, Schémaeza BONZI2, Irénée Somda3, and Anne LEGREVE4
1 Université Polytechnique de Bobo-Dioulasso, Institut du Développement Rural, BP 1091, Bobo-Dioulasso, Burkina Faso
2 Université Polytechnique de Bobo-Dioulasso, Institut du Développement Rural, BP 1091, Bobo-Dioulasso, Burkina Faso
3 Université Polytechnique de Bobo-Dioulasso, Institut du Développement Rural, BP 1091, Bobo-Dioulasso, Burkina Faso
4 Université Catholique de Louvain-la-Neuve, Faculté des Bio ingénieurs, Earth and Life Institute, Croix du Sud 2 box L7.05.03, 1348 Louvain-la-Neuve, Belgium
Original language: English
Copyright © 2016 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
This study was carried out to assess the seed-borne fungi of onion in Burkina Faso. Eighteen onion seed samples were collected from local farmers and wholesalers of vegetable seeds in the country and were investigated for fungi. The investigation was done using the “blotter method” on dry seeds and on seedlings. Fungal contamination was detected in all 18 tested samples. Seventeen fungal species belonging to 11 fungal genera were identified in the seed samples: Aspergillus was detected in 17 samples, Fusarium and Rhizopus in 15 samples, Cladosporium in 14 samples and Penicillium in 13 samples. Aspergillus niger and Fusarium oxysporum, known to be the causal agents of black mould and basal rot diseases, were detected in 17 and 11 samples, respectively, by seed analysis and in 10 and 9 samples, respectively, by seedling analysis. The infection rates by the fungal species varied from 0 to 90.3% for A. niger and from 0 to 13.5% for F. oxysporum. Alternaria porri, the causal agent of purple blotch disease was recorded lowly on two seed samples at infection rates of 0,5 and 1%. Exotic seed samples showed better health quality compared to local seed samples. These results indicated that the seeds locally produced by farmers in Burkina Faso are for low health quality and needs strong treatments before use to avoid diseases appearance in fields.
Author Keywords: Onion, Seed Health, infection rate, Aspergillus niger, Fusarium oxysporum, Burkina Faso.
How to Cite this Article
Tobdem Gaston DABIRE, Schémaeza BONZI, Irénée Somda, and Anne LEGREVE, “Identification of seed-borne fungi of onion (Allium cepa L.) in Burkina Faso,” International Journal of Innovation and Scientific Research, vol. 25, no. 2, pp. 562–575, July 2016.
