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The Influence of Shoot Ontogeny on Juvenile-Mature Correlations in Loblolly Pine

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Abstract:

A short-term genetic test of 18 open-pollinated loblolly pine families and two checklots was destructively measured over 18 months after germination. The purposes of the study were to detect change in juvenile-mature family mean correlations as shoot development progressed and to reevaluate shoot dry weight as a juvenile indicator trait. Height at the first bud was negatively correlated with eight-year height, whereas height accrued after first budset was positively correlated (r ≥ + 0.59) at all measurement ages. Juvenile-mature correlations between total seedling height and eight-year height rose as height after first budset increased. Seedling shoot length was more strongly correlated with eight-year height than was seedling dry weight. Dry weight was negatively correlated with eight-year height in the first year but in the second year the correlation rose to near zero. Date of second year growth cessation was not related to later growth performance in field tests. Length of shoot beyond first budset (cyclic growth length) was the best juvenile indicator of eight-year height. For. Sci. 33(2):411-422.

Keywords: Pinus taeda; cyclic growth phase; family mean correlations; free growth phase; retrospective tests

Document Type: Journal Article

Affiliations: Duke University School of Forestry and Environmental Studies, Durham, NC 27706

Publication date: June 1, 1987

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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.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 in forestry

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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