Genetic Interaction of Cronartium ribicola and Ribes hudsonianum var. petiolare
Abstract:Inoculation of seven clones of Ribes hudsonianum var. petiolare by single and massed Cronartium ribicola aeciospores from five blister rust cankers showed significant clonal variation in general resistance judged on the bases of disease intensity and latent period. Repeated reinoculation of two clones with massed urediospores from 132 single-aeciospore cultures from 19 aecia showed highly significant aecium x clone interaction. This interaction was interpreted to signify the presence of specific, genetically governed resistance in R. hudsonianum to C. ribicola. Failure to obtain infections on two other clones by urediospores from these 132 aeciospore lines and failure to obtain infection on the same two clones by massed aeciospore inoculations although these clones had supported low levels of rust in the field, also supported the suggestion of specific resistance. Forest Sci. 27:758-763.
Document Type: Journal Article
Affiliations: Biological Lab Technician, Intermountain Forest and Range Experiment Station, USDA Forest Service, Ogden, Utah 84401
Publication date: December 1, 1981
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