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Assessing the Pathogenic Ability of Six Species of Fusarium Genus on Onion Variety in Burkina Faso

Agricultural Sciences 2023年第6期14卷 739-750页

作者： kouka hamidou sogoba Tounwendsida Abel Nana Alassane Ouattara Mohamed Sana Bawomon Fidèle Neya Harouna Sawadogo Kadidia Koïta Laboratoire Biosciences Département de biologie végétale et de physiologie végétale Université Joseph KI-ZERBO Ouagadougou Burkina Faso Centre 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.

关键词： Fusarium spp. Pathogenicity Allium cepa L. Burkina Faso

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Impact of Three Isolates of Cercosporidium personatum (Berk. Et M.A Curt.), a Pathogen of Late Leaf Spot, on Defoliation and Yield in Groundnut (Arachis hypogaea L.) under Controlled Conditions

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American Journal of Plant Sciences 2023年第10期14卷 1101-1114页

作者： Bawomon Fidèle Neya Tobdem Gaston Dabire Alassane Ouattara Amado Sawadogo Diariétou Sambakhe kouka hamidou sogoba Tounwendsida Abel Nana Ibié Gilles Thio Frank Essem Kadidia Koita University Center of Gaoua Nazi BONI University Bobo Dioulasso Burkina Faso Life and Earth Sciences Unit Joseph KI-ZERBO University Ouagadougou Burkina Faso Senegalese Institute of Agricultural Research/CERAAS Thiès Senegal Institute for the Environment and Agricultural Research (INERA) Ouagadougou Burkina Faso Akenten Appiah-Menka University of Skills Training and Entrepreneurial Development Mampong Ghana

Late leaf spot caused by Cercosporidium personatum is one of the most widespread groundnut leaf diseases. Along with early leaf spot and rust, it is one of the main fungal diseases hampering groundnut production worldwide. Late leaf spot accounts for significant yield losses throughout the world where groundnuts are grown. This reduction in yield caused by the disease could result in yield losses of between 50% and 70%. In Burkina Faso, the disease is present throughout the country, with incidence varying according to region and season. Could the variability in the incidence of the disease be linked to the nature of the isolates or to the conditions from each agro-ecological zone? In this study, the aim was to assess the capacity of three isolates from three agroclimatic zones of the country to defoliate and reduce groundnut yield. To this end, three isolates of Cercosporidium personatum (Berk. Et M.A Curt.) were collected in these zones and evaluated on three contrasting groundnut varieties. A split-splot design was used for the experiment. Isolates were prepared from samples collected in farmers’ fields. After incubation in the laboratory, leaf spots showing good sporulation were scraped off with a scalpel after immersing the leaves in distilled water. Inoculations were carried out under controlled environment. After inoculation with the isolate, the percentage of defoliation and the reduction in yield of these varieties were then evaluated. Inoculation was carried out from the 30th day after sowing with Cercosporidium personatum spore suspensions at 105 spores/ml. The study showed that the percentage of defoliation (P = 0.0001) and the reduction in yield (P = 0.0001) were significant. The study revealed that, whatever the variety, isolate I3TF from the Upper Basins region in the South Sudanese zone caused the greatest defoliation and the greatest reduction in yield. The variety TS32-1, regardless of the isolate used for the treatment, recorded the best

关键词： Arachis hypogaea Isolate Late Leaf Spot Cercosporidum personatum Yield Defoliation

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Assessing the Pathogenic Ability of Six Species of Fusarium Genus on Onion Variety in Burkina Faso

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Agricultural Sciences（农业科学） 2023年第6期

作者： kouka hamidou sogoba Tounwendsida Abel Nana Alassane Ouattara Mohamed Sana Bawomon Fidèle Neya Harouna Sawadogo Kadidia Koïta

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Impact of Three Isolates of Cercosporidium personatum (Berk. Et M.A Curt.), a Pathogen of Late Leaf Spot, on Defoliation and Yield in Groundnut (Arachis hypogaea L.) under Controlled Conditions

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American Journal of Plant Sciences（美国植物学期刊） 2023年第10期

作者： Bawomon Fidèle Neya Tobdem Gaston Dabire Alassane Ouattara Amado Sawadogo Diariétou Sambakhe kouka hamidou sogoba Tounwendsida Abel Nana Ibié Gilles Thio Frank Essem Kadidia Koita

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