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Notes: Clonal and Annual Variation in Cone Production in Loblolly Pine Seed Orchards

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Monitoring two loblolly pine (Pinus taeda L.) orchards for several years indicated that cone production was under moderate genetic control (broad-sense heritability estimates of 0.35 and 0.40). Early in the life of these orchards a few clones contributed most of the cone crop. This percentage was reduced as the orchards matured until approximately 60% of the clones were required to produce 90% of the cone crop. Even then, clones frequently changed rank from year to year. There was no relationship between a clone's cone production in a seed orchard and its performance in progeny tests. Forest Sci. 32:1067-1073.
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Keywords: Heritability; Pinus taeda L; clone x year interaction; cone production

Document Type: Miscellaneous

Affiliations: Assistant Management Forester, Georgia-Pacific Corp., Crossett, AR

Publication date: 1986-12-01

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    Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
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