USDA Forest Service
 

Pacific Southwest Research Station

 

Pacific Southwest Research Station
800 Buchanan Street
West Annex Building
Albany, CA 94710-0011

(510) 559-6300

United States Department of Agriculture Forest Service. USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.

Publications and Products

Order a printed copy
of this publication.

Research Paper

Title: Xylem Monoterpenes of Some Hard Pines of Western North America: three studies

Author: Smith, Richard H.

Date: 1982

Source: Res. Paper PSW-RP-160. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station; 7 p

Station ID: RP-PSW-160

Description: Monoterpene composition was studied in a number of hard pine species and results were compared with earlier work. (1) Intratree measurements showed strong constancy of composition in both single-stemmed and forked trees of ponderosa, Jeffrey, Coulter, and Jeffrey x ponderosa pines. In grafts of these and other pines, the scion influenced the root stock, but not the reverse. (2) Large intcrtree variation in composition was found in a small sample of seven hard pines native to Mexico; the value of monoterpenes in clarifying taxonomy of these pines remains uncertain. (3) An 80-tree plot of ponderosa is adequate to determine average monoterpene composition. For the best estimate of the kinds and abundance of types of composition, a 350-tree plot is needed. Short-column chromatographic analysis is acceptably accurate for rapid classification of a large number of samples.

Key Words: xylem monoterpenes, Pinus ponderosa, P. coulteri, P. jeffreyi, P. torreyana, P. sabiniana, P. montezumae, P. hartwegii, P. rudis, P. pseudostrobus, P. durangensis, P. cooperi, P. engelmannii

View and Print this Publication (589 KB)

Citation

Smith, Richard H.   1982.  Xylem Monoterpenes of Some Hard Pines of Western North America: three studies  Res. Paper PSW-RP-160. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station; 7 p.

Last Modified: Nov 18, 2013 12:46:32 PM