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Notes: Spruce Budworm Defoliation in Relation to Introgression in Red and Black Spruce

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Abstract:

During a genecological study of the red-black spruce complex in central New Brunswick, it appeared that severity of spruce budworm defoliation was related to the genotype of the individual trees. The closer an individual tree approximated red spruce, the greater the severity of budworm defoliation. This relationship was tested by rating foliage samples, obtained from red, black, and introgressed spruce, in respect to budworm defoliation. The correlation between budworm defoliation and genotype, as determined by a hybrid index system, was highly significant.

Keywords: Choristoneura fumiferana; Picea mariana; Picea rubens; genecology

Document Type: News

Affiliations: Research Scientist, Forest Research Laboratory, Dept. of Fisheries and Forestry, Fredericton, N. B.

Publication date: 1969-12-01

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 in forestry

    Average time from submission to first decision: 62.5 days*
    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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