Reliability of Ethanol Flotation for Testing Tamarack Seed

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Abstract:

The reliability of assessing tamarack seed quality using 95% ethanol to separate empty and full seed was tested using two different methods. X-radiography analysis and germination trials indicated that ethanol flotation of tamarack seed results in the loss of 30-40% of the full seed and over 52% of the germinable seed if floating seed is considered empty and subsequently discarded. Seeds infested by the seed chalcid consistently floated and were removed with the floating seed. X-radiography is the most appropriate method for evaluating tamarack seed quality. North. J. Appl. For. 4:69-72, June 1987.

Document Type: Journal Article

Affiliations: Cooperative Forestry Research Unit, College of Forest Resources, University of Maine, Orono, 04469

Publication date: June 1, 1987

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  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Northern Journal of Applied Forestry covers northeastern, midwestern, and boreal forests in the United States and Canada.
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