A Test of the Validity of Screening Poplar Clones for Long-Term Canker Disease Damage by Responses to Inoculation with Septoria Musiva
Septoria musiva (S. musiva) causes a stem canker disease that severely damages susceptible hybrid poplars in Eastern North America. An earlier field trial demonstrated the potential for short-term responses of poplar stems to inoculation with S. musiva to be predictive of long-term canker disease damage. In the summer of 2000, additional poplar clones primarily selected by a forest industry cooperator on the basis of growth potential (plus the resistant and susceptible standard clones used in the similar field trial in 1998) were inoculated in a test of the validity of the screening procedures. Trees were inoculated during their first season of growth by removing the fourth or fifth fully expanded leaf and placing an agar plug colonized by an aggressive isolate of S. musiva over the resulting wound. Four months after inoculation, incidence of cankers, canker length, and percentage of stem circumference affected (girdle) were recorded.
Download this file:
Download this file
—
PDF document,
758Kb
Details
Author(s): J. E. Weiland, J. C. Stanosz, G. R. Stanosz
Publication: Tree Planters' Notes - Volumes 51, Number 1 (2005)
Volume: 51
Number: 1
