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Home → Publications → Tree Planters' Notes → Tree Planters' Notes Volume 36, Number 3 (1985) → Estimating Seed Vigor by Sugar Exudates and Radicle Elongation

Estimating Seed Vigor by Sugar Exudates and Radicle Elongation

Sugar exudates and radicle growth were evaluated as techniques to estimate the vigor of longleaf (Pinus palustris Mill), spruce (P. glabra Walt.), and loblolly (P. taeda L.) pine seeds. The effectiveness of these methods varied considerably by species. The reliability of sugar exudates as an index of germinability was better for species with softer seedcoats. Seeds with harder coats were apparently less permeable to the passage of exudates that may have resulted from cell wall degradation. The use of radicle elongation as an index of vigor seemed equally as variable.


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Author(s): James P. Barnett

Publication: Tree Planters' Notes - Volume 36, Number 3 (1985)

Volume: 36

Number: 3