نوع مقاله : مقاله پژوهشی
نویسندگان
گروه گیاهپزشکی، دانشکده کشاورزی، دانشگاه رازی، کرمانشاه، ایران.
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Oak dieback disease caused by Paecilomyces formosus is emerging as a serious threat to forests in western Iran, particularly Kermanshah province. To date, no management practices have been implemented against this pathogen. The use of chemical coumponds is not recommended in these sensitive ecosystems; therefore, finding sustainable and environmentally friendly biological control methods are essential. In this study, the biocontrol potential of nine Trichoderma species (Trichoderma arundinaceum, T. asperellum, T. avecolar, T. brevicompactum, T. crassum, T. koningii, T. koningiopsis, T. longibrachiatum, and T. virens) against P. formosus was evaluated under laboratory and greenhouse conditions. The results showed that T. virens and T. koningii had the greatest effect on reducing P. formosus growth in the dual culture assay, T. virens and T. brevicompactum in the fungal extract assay, and T. brevicompactum, T. koningiopsis, and T. longibrachiatum in the volatile compounds assay. In pathogenicity tests under laboratory and greenhouse conditions, all Trichoderma species significantly reduced the length of P. formosus-induced cankers. Trichoderma brevicompactum and T. arundinaceum were the most effective fungi in reducing the length of P. formosus-induced cankers in the laboratory and greenhouse, respectively.
کلیدواژهها [English]
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