Walnut Blight: Susceptibility of Germplasm and the Retention of Overwintering Pathogn Populations
نویسندگان
چکیده
Aspects of the susceptibility of English walnu~ to infection by Xanthomonas campestris pv. juglandis, the bacterium which causes walnut blight, were investigated. Leaves of 15 mature English walnut trees were inoculated with the bacterium which causes walnut blight, and after 35 days each cultivar was rated for infection severity. During the following dormant season, the buds associated with the infected foliage of each cultivar were sampled and analyzed to determine their frequency and level of infestation. Branches with moderately infected foliage had a higher frequency of bud infestation than branches which were lightly or severely infected. Leaves of 15 walnut cultivars, including 1
منابع مشابه
Walnut Blight: Genetic Variation in English Walnut in Response to Inoculation with Xanthomonas Campestris Pv. Juglandis
This was the second year of a study which evaluated the genetic variation among English walnut germplasm in response to infection by Xanthomonas campestris pv. juqlandis (Xcj), the bacterium which causes the disease walnut blight. Immature leaves and nuts of 10 walnut accessions representing the breadth of currently available germplasm were inoculated. Leaves were scored for disease severity at...
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