Abstract
The present study was undertaken to investigate the effect of using different extracts of two types of trees (Jatropha curcas seeds and Taxodium distichium cones). The solvents used were distilled water and ethanol. Determination of bioactive components of each extract was carried out using gas chromatography/ Mass Spectrometry (GC/MS) analysis. In general, ethanolic extract was the most effective on the both of linear growth, sclerotial numbers and mycelium characteristics of Sclerotium cepivorum than both of the cold or hot water extracts compared to control. Under In vitro conditions, treated with 20% of ethanol solvent showed a fungicidal effect meanwhile, fungistatic effects appeared at 5% for reduction of the mycelium growth..In the greenhouse experiments, the results indicated that onion transplants treated with ethanolic extract of taxodium and jatropha at 20% resulted in significant reduction to the disease with a significant increase in bulb yield compared with a check treatments. This report is one of few papers which using taxodium cones and jatropha seeds as antifungal substances against plant pathogens especially S. cepivorum under worldwide and Egypt conditions.
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