Notes: Effects of Elevation and Seed Source on Tracheid Length in Young Ponderosa Pine
Author: Echols, R. M.
Source: Forest Science, Volume 19, Number 1, 1 March 1973 , pp. 46-49(4)
Publisher: Society of American Foresters
Abstract:Tracheid lengths in 30-year-old ponderosa pine progeny test plantations in the central Sierra Nevada of California were analyzed for effects of (a) elevation of seed parents and (b) elevation and location of test sites. The influence of elevation of seed parents on progeny tracheid length was not significant. Plantation location was significant, but interaction between progeny and location was not. The regression of tracheid length on dbh was negative. Regardless of elevation of parent source, high-elevation plantings produced larger diameters and shorter tracheids than lower elevation plantings. Forest Science 19:46-49.
Document Type: News
Affiliations: Research Forester, Pacific Southwest Forest and Range Expt. Sta., USDA Forest Service, Box 245, Berkeley, Calif. 94701
Publication date: March 1, 1973
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