Fire blight of pomaceous trees in Greece - evolution of the disease and characteristics of the pathogen Erwinia amylovora.
This disease was first reported in Greece in a single pear orchard in the central Peloponnesus in 1984 and spread in that area has been slow, with no serious problems in either apple or pear orchards except in 1987. The spread and evolution of the disease in different parts of Greece is presented chronologically, and hosts affected in these areas are indicated. The morphological, physiological and biochemical characteristics of representative pathogenic isolates from different hosts and localities are noted. It is concluded that the causal bacterium of fireblight in Greece is identical with the type of E. amylovora. This paper was presented at the Fifth International Workshop on Fireblight, held in Diepenbeek, Belgium on 19-22 Jun., 1989.