Provisional tree and shrub seed zones for the Great Plains

Richard A. Cunningham

Treesearch

Provisional tree and shrub seed zones for the Great Plains

Informally Refereed

Authors:

Richard A. Cunningham

Year:

1975

Type:

Research Paper

Station:

Rocky Mountain Research Station

Source:

Res. Pap. RM-150. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 15 p

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Download (PDF 1.25 MB): https://research.fs.usda.gov/download/treesearch/24593.pdf

Abstract

Seed collection zones are subdivisions of land areas established to identify seed sources and to control the movement of seed and planting stock. Seed zones are needed for many species because of the genetic variation associated with their geographic distribution. Zone boundaries may be delineated from experimental data that identify genetic variation, or by analysis of the environmental factors that most likely acted as selective forces in creating such genotypic variation.

Keywords

seed collection, Great Plains

Citation

Cunningham, Richard A. 1975. Provisional tree and shrub seed zones for the Great Plains. Res. Pap. RM-150. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 15 p