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Leader Growth of Young Pitch and Shortleaf Pines

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Abstract:

Seedlings of Pinus rigida Mill. and P. echinata Mill, in New Jersey display highly synchronized leader elongation, often involving the formation and elongation of several buds. Winter buds of these two species are often multinodal. Initially, leader elongation is due to the extension of the basal internode of the winter bud. Subsequently, the succeeding higher internodes elongate. Each internode displays a sigmoid growth curve achieving its peak growth rate after the internode below it. As the winter bud extends, its apical meristem is reactivated, and a new terminal bud formed. In P. rigida seedlings this bud occasionally elongates to form a summer shoot. Open-grown P. echinata seedlings almost always develop one summer shoot, and many produce two.

Document Type: Journal Article

Affiliations: Research Forester at the New Lisbon, N.J.

Publication date: September 1, 1963

More about this publication?
  • 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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