Skip to Main Content
The Influence of dormancy break requirements on germination and viability responses to winter submergence in acorns of three bottomland red oak (Sect Lobatae) speciesAuthor(s): Tracy S. Hawkins
Source: Forest Science
Publication Series: Scientific Journal (JRNL)
Station: Southern Research Station
Download Publication (153.0 KB)
DescriptionThe objective of this study was to examine the relationship of dormancy break requirements to winter submergence effects on germination and viability in cherrybark, willow, and Nuttall oak acorns. Acorns were submerged in a greentree reservoir and received 0, 21, 42, 63, or 84 days of winter submergence, followed by 8 weeks of incubation in four alternating temperature regimes (15/6°, 20/10°, 25/15°, and 30/20° C). Submergence substituted for cold stratification requirements of cherrybark oak acorns, and dormancy break was achieved with 63 days of submergence. Although submergence exerted a positive effect on germination in Nuttall and willow oak acorns, dormancy break was not achieved in acorns of either species. Germination percentages were highest in the 30/20 °C incubation temperature — cherrybark oak acorns (59% - 83%), followed Nuttall oak (33% - 62%) and willow oak (14% - 52%). Among treatment combinations, all willow oak nongerminants were viable. Viability loss in cherrybark and Nuttall oak acorns was greatest in the 63 and 84 day treatments. The dynamics of acorn germination in response to winter hydrologic regime is, in large part, directed by submergence duration that may, or may not, satisfy dormancy break requirements in acorns of these red oak species.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationHawkins, Tracy S. 2019. The Influence of dormancy break requirements on germination and viability responses to winter submergence in acorns of three bottomland red oak (Sect Lobatae) species. Forest Science. 65(5):556-561 https://doi.org/10.1093/forsci/fxz028.
Keywordsacorn germination, acorn submergence, bottomland forests, Quercus, red oak acorns
- Dormancy break and germination requirements in acorns of two bottomland Quercus species (Sect. Lobatae ) of the eastern United States with references to ecology and phylogeny
- Twenty-year-old results from a bottomland oak species comparison trial in western Kentucky
- Flush Development Dynamics in First-Year Nursery-Grown Seedlings of Eight Oak Species
XML: View XML