Articles

SUSCEPTIBILITY OF BELARUSIAN APPLE AND PEAR CULTIVARS TO FIRE BLIGHT

Article number
896_50
Pages
363 – 366
Language
English
Abstract
The susceptibility of 13 Belarusian apple and 10 pear cultivars to fire blight was tested by artificial inoculations of terminal shoots with Erwinia amylovora. The shoots of young trees growing in a greenhouse were inoculated at the same time with a highly virulent strain of Erwinia amylovora. The disease severity was calculated as percentage of necrosis in relation to the length of a shoot.
Only three apple cultivars, ‘Zaslavskoe’, ‘Charaunitsa’ and ‘Alesya’ and one pear cultivar ‘Chizhovskaya’ were found to be moderately susceptible to fire blight, whereas other cultivars were highly susceptible.
DNA of all apple cultivars was amplified with primers specific for three SCAR markers, linked to the “Fiesta” linkage group 7 major quantitative trait locus for fire blight resistance (AE10-375, GE-8019, CH-F7-Fb1). This locus was identified in genomes of two apple cultivars, ‘Zaslavskoe’ and ‘Charaunitsa’.

Publication
Authors
A.L. Lagonenko, I.V. Kudzina, A.N. Evtushenkov, M.A. Krugleevskiy, M.S. Kastritskaya, N.V. Kukharchyk
Keywords
Erwinia amylovora, apple cultivars, fire blight resistance, molecular markers, QTL
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