In Vitro Testing of Biological Control Agents on A1 and A2 Isolates of Phytophthora ramorum
نویسندگان
چکیده
Biological control products were tested in vitro with six isolates of Phytophthora ramorum. These isolates were geographically diverse and were selected based on their pathogenicity to detached Rhododendron leaves. In addition to five commercially available biocontrol products, nine species of Trichoderma were tested. The in vitro tests included dual culture methods and detached Rhododendron leaf assays. Best results were obtained with the actinomycete Streptomyces lydicus (Actinovate®) in both culture and detached leaf tests. There were differences among P. ramorum isolates in their sensitivity to the biocontrol agents tested.
منابع مشابه
Characterisation of European and North American Phytophthora ramorum isolates due to their morphology and mating behaviour in vitro with heterothallic Phytophthora species.
Vegetative growth rate, and size of sporangia, chlamydospores and oospores from 94 P. ramorum isolates were measured and the isolates were paired in vitro with four different heterothallic Phytophthora species isolated from infected nursery plants in Germany. P. ramorum isolates originated from different European countries and from Canada and the USA. 66 of the 67 European isolates were determi...
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