FUW TRENDS IN SCIENCE & TECHNOLOGY JOURNAL
(A Peer Review Journal)
e–ISSN: 2408–5162; p–ISSN: 2048–5170
keywords: Mycoflora, Vigna subterranea, leaf extracts, inhibition, Alternanthera brasiliana
Using direct plating method, seeds of four (4) bambara nut (Vigna subterranea) cultivars were tested for seed borne mycoflora in the laboratory. Phytopathogenetic fungi viz: Aspergillus niger, Aspergillus flavus, Aspergillus clavatus and Alternaria alternata were isolated from these samples. The percentage of fungal incidence on seeds of four cultivars ranged from 40% to 75% with cream white having recorded the highest percentage incidence, while red nut had the least. The different percentages of fungal infection on seeds by the isolated fungi were equally determined. It ranged from 0.00 – 9.25%. The fungitoxic effects of the aqueous leaf extracts of Alternanthera brasiliana to control the radial mycelia growth of the isolated fungi was evaluated at four concentrations (10%, 20%, 30% and 40%). Results show that the aqueous leaf extracts of the plant had general retardation on the vegetative growth of the isolates; with the higher retardation at 40% concentration. The highest inhibitory effects of the extract observed on A. alternata at 40% (0.40 ± 0.44).
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