Fungal agents associated with Jatropha curcas L. seeds from Burkina Faso

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Léonard Ouédraogo³, Y. lassa D. S. N. I. W. I. O. (2016). Fungal agents associated with Jatropha curcas L. seeds from Burkina Faso. Academy of Agriculture Journal, 1(03). https://doi.org/10.15520/aaj.v1i3.14
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Abstract

Jatropha (Jatropha curcas L.), a source of biofuel, presents enormous socio-economic opportunities for small scale farmers in sub-Saharan Africa. Our study had for aim to inventory fungal species associated with Jatropha curcas seeds product in Burkina Faso. To achieve this, seeds were sampled in seven localities from different agro ecological areas for laboratory analysis. A portion of seed collection from each locality were directly observed using filter paper method to identifying fungi species and another portion was grown in nursery in order to characterize responsible fungi from the leaves infected. Koch’s postulates were undertaken, to establish the pathogenicity of some predominant fungi species. A total of seventeen fungi species were identified from seeds and infected leaves. Fusarium spp. was the most common identified regardless of seed origin. However, most of fungi isolated from seeds are saprophytes. In seedling test, several symptoms including necrosis, root tip burnings, chlorosis and wilting were observed. The pathogenicity test reveals that C. lunata, A. alternata, F. moniliforme and Colletotrichumcapsici were pathogen in artificial leaf inoculation. Indeed, these fungi, known to be seed-borne pathogens constitute a threat for a bestjatropha production in Burkina Faso. To this effect, it is need to treat the jatropha seeds during planting and the conservation.

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