Abstract
The article provides an analysis of the worldwide prevalence of a harmful disease on a pear – mildew, caused by the
 basidiomycete fungus Gymnosporangium sabinae (Dicks.) G. Winter, the taxonomy and biology of the pathogen is given.
 Preliminary data on disease-resistant samples of pears from the collection of RUE “Institute of Fruit-growing” (Belarus)
 are presented: Allegro, Victoria, Maria, Osoblyva, Smerichka, Souvenir, Shchedra, derived from Pyrgus communis L.;
 Augustovskaya rosa, Vernaya, Desertnaya Rossoshanskaya, Krasnobokaya, Podgoryanka, DU 20-3, Chuspan – from Pyrgus
 ussuriensis Maxim.; Chukhuang – from P. ussuriensis × Pyrgus ovoidea; Feeriya species derived from pear-leaved (sandy)
 Pyrgus pyrifolia (Burm.) Nakai.
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