Abstract
Isolations made from 68 naturally infected peach, plum, and sweet cherry nursery stock from the Niagara Peninsula and southwestern Ontario yielded 30 pathogenic isolates of Agrobacterium. These isolates were separated into two groups by 17 physiological and biochemical tests. The predominant group, consisting of 27 isolates, was 3-ketolactose negative and corresponded to biotype 2, and the other, consisting of only three isolates, corresponded to biotype 1 of Agrobacterium radiobacter var. tumefaciens sensu Keane, Kerr, and New (1970). Among the pathogenic isolates, 25 were sensitive and 5 were resistant to the bacteriocin produced by strain 84 of A. radiobacter var. radiobacter sensu Keane. Kerr, and New (1970).
Publisher
Canadian Science Publishing
Cited by
7 articles.
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