Biological control of blue mould of apple by Trichoderma isolates
F. Tabebordbar, H.R. Etebarian, N. Sahebany and H. Rohany.
Journal of Plant Pathology Volume 90 (2, Supplement) August 2008, Book of Abstract, 9th International Congress of Plant Pathology, August 24-29, 2008 Torino, Italy,. 507 pages.
2008
บทคัดย่อ
In the present study, the antagonistic effects of 11 isolates of Trichoderma were evaluated as potential biological control agents for blue mould of apple caused by Penicillium expansum. Trichoderma isolates inhibited the mycelial growth of P. expansum in dual culture by 55.16 to 69.26%. Volatile metabolites emitted from all isolates inhibited growth of P. expansum and the inhibitory effects of T. harzianum (T.301.11, T.401.4) were greater compared with the other isolates. Cell-free metabolites of T. viride (T.193, T.301.4) and T. harzianum (T.301.11, T.404.8) inhibited the pathogen by 58.21, 81.67, 87.06 and 88.36%, respectively. The concentration of pathogen and antagonist for inoculation were 1´105 cfu/ml and 1´107 cfu/ml, respectively. The antagonists significantly reduced decay area caused by P. expansum at 23 °C and 5°C. T. harzianum (T.192) at 23 °C and T. harzianum (T.404.8) and T. viride (T.193) at 5 °C had the best effect on decay reduction.