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Root Buds and the Development of Root Suckers in Sweetgum

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Sweetgum (Liquidambar styratiflua L.) reproduces prolifically from root suckers in the Georgia Piedmont. Histological observations of lateral root segments without visible buds or suckers reveal numerous suppressed buds embedded in the periderm with vascular traces extending either to the stele of the primary root or to a point of previous root injury. Clusters of adventitious buds are often found embedded in the periderm in swellings associated with aborted lateral roots, and the vascular traces of these buds become continuous with those of the previously formed lateral roots. The exposure of lateral roots to light resulted in the immediate release of numerous suppressed buds all along their surface. Complete girdling of exposed lateral roots had a similar but more restricted effect. The released buds were always concentrated on the side of the girdle away from the parent tree, indicating that some type of inhibition was removed. Histological observations of released buds and their later formed root suckers confirmed the suckers' origin from previously formed suppressed buds.

Document Type: Journal Article

Affiliations: Professor of Botany and Forestry, University of Georgia, Athens

Publication date: 1967-12-01

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

    Average time from submission to first decision: 62.5 days*
    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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