บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Efficiency of Trichoderma harzianum as a biocontrol agent against gray mold rot "Botrytis cinerea" of strawberry fruits.

El-Zayat, M. M.; Okasha, K. H. A.; El-Tobshy, Z. M.; El-Kohli, M. M. A.; El-Neshway, S. M.;

Annals of Agricultural Science (Cairo) Year: 1993 Vol: 38 Issue: 1 Pages: 283-290

1993

บทคัดย่อ

Efficiency of Trichoderma harzianum as a biocontrol agent against gray mold rot "Botrytis cinerea" of strawberry fruits.

Isolates of T. harzianum inhibited the growth of B. cinerea in vitro and reduced grey mould rot infection on strawberry fruits in vivo under greenhouse and field conditions in Egypt. Isolate TR25 grew rapidly over the mycelium of B. cinerea and prevented it from growing, thus showing a hyperparasitic reaction. However, isolates T, T2 and T3 did not show a hyperparasitic reaction but did antagonize the growth of B. cinerea at different levels. These isolates differed in toxin production in Gliotoxin Fermentation Medium (GFM) during the 4 weeks of incubation. The filtrate of isolate TR25 was most inhibitory to the growth of B. cinerea on PDA medium throughout the incubation period. All isolates of T. harzianum tested were effective in reducing the percentage of grey mould rot infection under both greenhouse and field conditions. The most effective isolate, TR25, reduced disease incidence by 60% of that in a control up to 2 weeks after inoculation.