Geographic variation within tree species is one of the basic issues
facing foresters, biologists, and others who work with trees. Genetic
differences among and within populations of these trees become
important considerations when forests are regenerated artificially by
seeding and planting, and when new species are introduced in forestry,
agroforestry, or for ornamental and landscape purposes.
Geographic Variation in Forest Trees is the first book to
examine this subject from a world-wide perspective. Following a
historical review, the author discusses population genetic theory and
genetic systems of native North American tree species as they interact
with environments in the major climatic regions in the world. He then
demonstrates how this knowledge is used to guide seed zoning and seed
transfer in silviculture, basing much of his discussion on models
developed in Scandinavia and North America. In the final chapter, the
author addresses the issue of genetic conservation -- a subject of
great concern in the face of accelerated forest destruction, industrial
pollution, and climatic change.
This comprehensive, well-researched book makes a significant
contribution to the knowledge of one of our most important renewable
E. Kristian Morgenstern is a forestry consultant and former Canadian Forest Service scientist and professor at the University of New Brunswick.
1. Concepts of Plant Reproduction, Variation, Heredity, and Breeding: A Brief History Genetics and Plant Breeding in Europe, 1700-1900 Quantitative Methods Development of Methods and Programs 2. Population Genetics Genetic Processes Genetic Systems 3. Environmental Influences and Geographic Variation Physical Factors Influencing Natural Selection Geological History Seasons, Climate, and Phenology Regional Differences in Ecology and Genetic Systems Experiments: The Theory Variation Patterns Variation Patterns: General Conclusions 4. Genetic Variation in Some Major Species Angiosperms Gymnosperms 5. Geographic Variation and Silviculture Control of Seed Origin Seed Zones and Seed Transfer Seed Transfer: Methods and Examples Species Introduction 6. Conservation of Genetic Resources The Need for Gene Conservation Objectives of Gene Conservation Measures of Genetic Diversity Methods Gene Conservation Programs