Relationship between total nonstructural carbohydrate concentration and root diameter in sugar maple

Thomas E Kolb, L. H. McCormick

Research output: Contribution to journalArticle

6 Scopus citations


Total nonstructural carbohydrate (TNC) concentration, an estimate of the carbohydrate energy readily available to the plant, was measured by chemical extraction (enzymatic hydrolysis) in dormant season roots of sugar maple (Acer saccharum Marsh.). In all sample trees, TNC concentration increased as root diameter decreased. On the average, root diameter explained 60% of the variation in TNC concentration within an individual tree. Linear regressions of TNC concentration on root diameter did not differ significantly among trees. Bias on TNC concentration introduced by differences in root size can be minimized by sampling similar root diameter classes among trees, or by adjusting TNC concentration to a common root size.

Original languageEnglish (US)
Pages (from-to)343-346
Number of pages4
JournalForest Science
Issue number1
StatePublished - 1991
Externally publishedYes



  • Acer saccharum
  • Plant biochemistry
  • Tree health

ASJC Scopus subject areas

  • Forestry
  • Ecological Modeling
  • Ecology

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