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Annual Variations in Soluble Sugars, Starch, and Total Food Resources in Eucalyptus Obliqua Roots

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Monthly analyses of soluble sugars, starch, and total food resources (TFR) in root wood and bark of 23-year-old Eucalyptus obliqua trees showed that TFR and soluble sugars plus starch content were highest in whole roots in late spring-early summer and lowest in early winter. Soluble sugar levels were highest in wood and lowest in bark in winter. The maximum starch content in root wood occurred in early summer; bark contained little starch at any time. Levels of TFR were correlated with starch and soluble sugar plus starch content in the wood but not in bark. Annual fluctuations in TFR suggests hemicellulose functions as a reserve food in E. obliqua roots. FOREST SCI. 27:449-454.
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Keywords: Carbohydrates; reserves

Document Type: Journal Article

Affiliations: CSIRO, Division of Forest Research, Creswick, Victoria, 3363

Publication date: 1981-09-01

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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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    June 1, 2016 to Feb. 28, 2017

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