Abstract
Abstract—Antagonistic yeasts to Colletotrichum capsici were isolated from rhizosphere soil, fruits and leaves of chili plants. The majority of yeast isolates (60 isolates; 31.09%) were isolated from rhizosphere soil. In dual culture tests, five of the isolates screened (HS6, SS11, SLD5, SS10 and PLN13) were found to inhibit C. capsici growth with biocontrol efficacies as 43.12%, 42.50%, 41.87, 41.25 and 40.62%, respectively. Morphological characteristics of them were examined by observing cell and colony patterns. They produced septate pseudohyphae, holoblastic budding and ascospore with two-layers. The colony of each antagonistic yeast was globose, mucoid, white, glistering, raised and smooth. Based on statistical analysis, these antagonistic yeasts (HS6, SS11, SLD5, SS10 and PLN13) could significantly control disease incidence in chili fruits when compared control. The most effective antagonistic isolate was PLN13, the percentage of survival in chili fruits being 60.00 %.
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