Genetic Variances of Scotch Pine: Environment and Age Effects
Authors: Schrum, G. M.; Gerhold, H. D.; West, R. F.; Hamilton, L. S.
Source: Forest Science, Volume 21, Number 4, 1 December 1975 , pp. 330-339(10)
Publisher: Society of American Foresters
Abstract:Genetic and environmental variances of ornamental traits in Scotch pine families were examined under the influence of replication at nine locations and at three ages. The family components of variances in needle color, needle length, height, branch angle, branch length, number of branches, and crown taper were all significant, and location effects were generally larger than family effects. The family-by-location interaction variances were relatively small for height and needle traits, but were much more important for the others. Degree of genetic control was higher for needle characteristics than for height, branching habit, or crown taper. The need for replication in space and time will depend on which traits are to be improved and on the design of selection or testing schemes. Forest Sci. 21:330-339.
Document Type: Journal Article
Affiliations: Professor of Conservation, Cornell University
Publication date: December 1, 1975
- Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
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