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Seed zones and breeding zones for sugar pine in southwestern Oregon.Author(s): Robert K. Campbell; Albert I. Sugano
Source: Res. Pap. PNW-RP-383. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 18 p
Publication Series: Research Paper (RP)
Station: Pacific Northwest Research Station
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DescriptionProvisional seed zones and breeding zones were developed for sugar pine (Pinus lambertiana Dougl.) in southwestern Oregon. Zones are based on a map of genetic variation patterns obtained by evaluating genotypes of trees from 142 locations in the region. Genotypes controlling growth vigor and growth rhythm were assessed in a common garden. Within southwestern Oregon, two zones are recommended for low elevations (<740 m), two zones for middle elevations (>740 and <1172 m), and four zones for high elevations (>1172 m).
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CitationCampbell, Robert K.; Sugano, Albert I. 1987. Seed zones and breeding zones for sugar pine in southwestern Oregon. Res. Pap. PNW-RP-383. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 18 p
KeywordsSeed zones, geographic variation, genetic variation, adaptation (plant), sugar pine, Pinus lambertiana
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