A Statistical Approach to the Separation of White and Black Spruce on the Basis of Xylem Anatomy

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Wood speciments from Picea mariana (Mill.) BSP and P. glauca (Moench) Voss were collected across the Boreal Forest Region of Saskatchewan and Manitoba, and in southeastern Manitoba. Fifteen xylem attributes were measured on cross, tangential and radial sections to provide an anatomical basis for separation of the species. A discriminant function involving only three of these attributes (tracheid diameter, longitudinal resin canal diameter, and percentage of latewood) tested significant at the 1 percent level, and displayed just as much discriminating power as did the complete fifteen term function. Use of the equation allowed slightly more than three-fourths of the 252 spruce sections to be correctly identified.

Document Type: Journal Article

Affiliations: Assistant Professor, Faculty of Forestry, University of Toronto, Canada

Publication date: June 1, 1966

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