Variation in Aluminum Tolerance among Six Genera of Trees
Using a hydroponic system, the relative aluminum tolerance of 11 tree species was evaluated at 10 levels of Al concentration from 0 to 280 ppm. Species evaluated were Alnus glutinosa, Betula alleghaniensis, B. papyrifera, B. populifolia, Elaeagnus umbellata, Pinus rigida, P. sylvestris, P. virginiana, Populus hybrid clone NE-388, Quercus palustris, and Q. rubra. A comparison of tolerance indices based on root elongation in Al vs. non-Al solutions revealed a wide range of Al tolerance among species. Populus hybrid and E. umbellata were very sensitive to even low Al concentrations (10-40 ppm), while A. glutinosa, Betula spp., Pinus spp., and Quercus spp. were tolerant to much higher concentrations (80-160 ppm). This level of tolerance is greater than that reported for most field crops. Forest Sci. 24:565-568.
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Document Type: Journal Article
Affiliations: Assistant Professor of Forest Resources, School of Forest Resources, The Pennsylvania State University, University Park, PA 16802
Publication date: 1978-12-01
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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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