Cleary, Michelle
- Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences
Abstract
Plots were established in 20 juvenile mixed conifer stands in the Interior Cedar Hemlock biogeoclimatic zone of British Columbia's southern interior region in western Canada to assess mortality and host response to infection in the form of basal lesions caused by Armillaria ostoyae. Western redcedar showed significantly lower mortality and a higher proportion of callused lesions at the root collar than Douglas-fir and western hemlock. Mortality decreased with increasing tree diameter for all species; however, the rate of decrease was markedly greater for western redcedar than Douglas-fir or western hemlock. Results from logistic regression analysis showed that the probability of Douglas-fir being killed is 14.6 times greater than western redcedar in these juvenile stands. Because western redcedar displayed significant resistance to A. ostoyae at both the root and stand level, this species represents an excellent choice as a significant stand component with more susceptible conifers. Should susceptible conifers succumb to Armillaria root disease, western redcedar will likely fill in the stand.
Published in
Forest Pathology
2021, volume: 51, number: 2, article number: e12675
Publisher: WILEY
SLU Authors
Associated SLU-program
SLU Plant Protection Network
UKÄ Subject classification
Forest Science
Publication identifier
- DOI: https://doi.org/10.1111/efp.12675
Permanent link to this page (URI)
https://res.slu.se/id/publ/110937