Orchard Susceptibility of Some Apricot, Peach, and Plum Cultivars and Selections to Xanthomonas Pruni
DOI:
https://doi.org/10.71318/apom.1974.28.1.16Abstract
Differences in the occurrence of bacterial spot ( Xanthomonas pruni) were recorded on 55 apricot, 101 peach, and 55 plum cultivars or selections following a severe epidemic in 1972 at Beltsville, Maryland. Leaf infection ranged from none to severe. Serious defoliation usually accompanied extensive leaf infection. Clones with considerable resistance to bacterial spot were found in each fruit species. These offer promise as parents in breeding for increased resistance, but a rapid screening technique is urgently needed. This information may also be useful to apricot, peach, or plum growers looking for varieties with bacterial resistance.
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