Seed-borne fungi of five cruciferous vegetables and relative efficacy of aqueous seed extracts against some associated fungi |
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Authors: | A Y Abdel-Mallek |
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Institution: | (1) Department of Botany, Faculty of Science, Assiut University, Assiut, Egypt |
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Abstract: | A total of 121 seed samples of cabbage, cauliflower, cress, radish and turnip collected from five localities in Upper Egypt
were assayed for their fungal flora. The highest count of fungi was recorded on cabbage seeds (75%), whereas the lowest count
was observed on turnip seeds (33%). Thirty-five fungal species and two varieties belonging to 16 genera were identified. The
broadest number of species (22 species + 1 variety) were isolated from cress seeds. However, only five species,viz. Aspergillus flavus, A. niger, Penicillium chrysogenum, P. funiculosum andRhizopus stolonifer, were found to be associated with seeds of the five plants. The relative efficacy of aqueous seed extracts against these
five fungal species was tested. The antifungal drug Trosyd (tioconazole) was taken as a standard inhibitor. The aqueous extract
of cabbage seeds inhibited three fungal species, cress extract two and cauliflower and turnip one species; radish seed extract
was ineffective. |
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