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Resistance of Douglas-fir to western spruce budworm: results of a preliminary progeny test



Resistance of Douglas-fir to western spruce budworm: results of a preliminary progeny test



Research Note, Forest Service, United States Department of Agriculture (INT-264): 7



Second- and third-instar larvae of Choristoneura occidentalis Freeman collected in Montana were placed on 3-month-old seedlings of Douglas fir (Pseudotsuga menziesii var. glauca) derived from seed collected in 7 stands in Montana and Idaho and exhibited a feeding preference. Reduced feeding relative to the test mean was observed on progeny from a stand that had survived a long-term severe outbreak of C. occidentalis.

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Accession: 000969731

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