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Ortet-Ramet Relationships of Wood-Specific Gravity in Lodgepole Pine

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Two 8-year-old grafted ramets from 12 lodgepole pine (Pinus contorta var. latifolia) ortets (wild stand parent trees) were sampled at each of three sites and were assessed for specific gravity with small diameter cores. The broad-sense heritability estimate from the analysis of variance was 0.62, but estimates derived by regressing clone means from ramets on ortet values were 0.49 and 0.54 for juvenile and mature wood, respectively. This relatively high repeatability for specific gravity suggests wild-stand ortet values may be useful for identifying low specific gravity clones in seed orchards, or potential low specific gravity families in breeding populations of lodgepole pine. West. J. Appl. For. 5(2):40-42, April 1990.
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Document Type: Journal Article

Affiliations: B.C. Ministry of Forests, Research Branch, 31 Bastion Square, Victoria, B.C. V8W 3E7

Publication date: 1990-04-01

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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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