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A One-Parent Progeny Test and Seed Orchard for the Improvement of Red Pine

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The open-pollinated progeny of 290 red pine from Michigan's Lower Peninsula were sown in a replicated nursery experiment in 1961. They will be transferred to permanent field plantings in 1963 and 1964. The field plantings will contain 290 origins X 15 replicates X 6 trees per plot = 26,100 trees and will cover about 30 acres each. As necessary they will be thinned by removing all trees of the poorer progenies and poor trees in the better progenies. That is a form of half-sib family selection. The field plantings will be measured and serve as progeny tests. Starting sometime between 1970 and 1975 they will also serve as breeding arboretums and as seed orchards for the production of seed of proven genetic superiority. As soon as practicable a second-generation test-orchard will be started. It will supersede the first one in 20 or 25 years. Because the test-orchards will provide inheritance data, they promise considerably more genetic improvement than do schemes involving only clonal propagation. They promise less information and improvement per progeny than would control-pollinated tests. However, if comparisons are made on a per-test or per-unit-of-effort basis, the use of open-pollinated progeny in the first generation is advantageous in this species.

Document Type: Journal Article

Affiliations: Member of the Forestry Department, Michigan State University, East Lansing

Publication date: 1963-10-01

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  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.

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