Seed zones and breeding zones for sugar pine in southwestern Oregon

Government Document

Transfer Guideline

Provisional 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).