Грибы Trichoderma для защиты тепличных культур от оомицета Pythium sp.
2023
Щербакова, Татьяна | Волощук, Леонид
Certain species of oomycetes, such as Pythium spp., exhibit high aggressiveness, posing a significant threat to young plant tissues of greenhouse crops like cucumbers, peppers, and tomatoes, leading to substantial yield losses. This research aims to identify highly virulent fungi of the genus Trichoderma Pers. ex Fr. for the protection of greenhouse crops against the pathogen Pythium sp. Pathogenicity testing of Pythium sp. was conducted using cucumber seedling infection assays. The antagonistic activity of nine Trichoderma cultures against Pythium sp. was assessed through dual culture experiemntal method. After 10 days, four fungi — Trichoderma lignorum (syn. T. viride) CNMN-FD-14, T. asperellum, T. koningii, and Trichoderma sp. 1K — completely colonizedthe pathogen, achieving a 100% inhibition rate. The remaining Trichoderma strains inhibited the pathogen with rates ranging from 83.5% to 94.1%. All Trichoderma strains tested in this study demonstrate potential for protecting greenhouse crops against the oomycete Pythium sp.
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