Effects of Rootstock Source on the Size, Cone Production, and Compatibility of Douglas-Fir Grafts
Abstract:Scions of coastal Douglas-fir (Pseudotsuga menziesii) were grafted on rootstock from coastal, northern interior and southern interior origin. Data on ramet size, cone production, and graft compatibility were collected. Twelve years after grafting significant differences for most crown and stem traits were found among the rootstock sources, with coastal rootstock resulting in the fastest scion growth. Northern interior rootstock sources produced larger grafts than southern interior rootstock. Significant graft union appearance and cone production differences were not detected, but coastal sources consistently had higher graft compatibility and healthier unions. It is concluded that, for coastal Douglas-fir, the use of a vigorous coastal rootstock source that promotes fast growth in the scion, and has high graft compatibility potential, is the most desirable for coastal locations. This will result in fewer losses due to graft incompatibility, faster crown development, more options for crown management and increased cone production potential. West. J. Appl. For. 7(3):73-77.
Document Type: Journal Article
Affiliations: B.C. Forest Service, Cowichan Lake Research Station, Box 335, Mesachie Lake, B.C. VOR 2N0
Publication date: 1992-07-01
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- Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Western Journal of Applied Forestry covers the western United States, including Alaska, and western Canada; WJAF will also consider manuscripts reporting research in northern Mexico that has potential application in the southwestern United States.
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