Skip to Main Content
Variation in phenology and monoterpene patterns of defoliated and nondefoliated Douglas-fir (Pseudotsuga menziesii var. glauca).Author(s): Rose-Marie Muzika; Judith Engle; Catherine Parks; Boyd Wickman
Source: Res. Pap. PNW-RP-459. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 10 p
Publication Series: Research Paper (RP)
Station: Pacific Northwest Research Station
View PDF (574 KB)
DescriptionFoliage was collected from paired Douglas-fir (Pseudotsuga menziesii var. glauca (Beissn.) Franco) trees characterized as either "resistant" or "susceptible" western spruce budworm (Choristoneura occidentalis Freeman (Lepidoptera: Tortricidae) attack. Resistant trees produced more foliage monoterpenes and broke bud 7 to 10 days earlier than susceptible trees.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationMuzika, Rose-Marie; Engle, Judith; Parks, Catherine; Wickman, Boyd. 1993. Variation in phenology and monoterpene patterns of defoliated and nondefoliated Douglas-fir (Pseudotsuga menziesii var. glauca). Res. Pap. PNW-RP-459. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 10 p
KeywordsSpruce budworm (Choristoneura occidentalis), Douglas-fir, phenology, monoterpenes
- Resistance of hemlock species and hybrids to hemlock woolly adelgid
- The relationship between Swiss needle cast symptom severity and level of Phaeocryptopus gaeumannii colonization in coastal Douglas-fir (Pseudotsuga menziesii var. menziesii).
- Hemlock woolly adelgid and its hemlock hosts: A global perspective
XML: View XML