Host plants of the Erwinia amylovora bacterium so far established in Yugoslavia
1997
Arsenijevic, M. (Poljoprivredni fakultet, Novi Sad (Yugoslavia)) | Panic, M. (Poljoprivredni fakultet, Beograd - Zemun (Yugoslavia))
During the last seven years (1989-1996) from the first occurrence of Erwinia amylovora in Yugoslavia, the pathogen was experimentally proved on four cultivated fruit trees (pear, quince, apple and medlar) and on the two species from spontaneous flora (hawthorn and wild pear). The first appearance of the strong infection noticed on pear and quince trees in 1989 was the reason for individual fruit trees uprooting or orchards eradication as one of the control measures applied. Until 1995 apple trees showed infection sporadically, but from 1995 the symptoms of severe blight in many apple cultivars were noticed. After 2-3 years from the first appearance of the disease in Yugoslavia domestic medlar also expressed the susceptible reaction. On Crataegus (hawthorn) and wild pear (field ash) the symptoms of the disease were also found. From the tissues diseased the pathogen was isolated and the identification was carried out. Since the end of 1996, beside the species mentioned above, Erwinia amylovora could not be found on other fruit trees nor on the species from spontaneously and ornamental plants: cotoneaster, pyracantha (firethorn), mauntainash (Sorbus spp.) and forsythia.
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