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    Author(s): Warren D. DevineConstance A. HarringtonJoseph M. Kraft
    Date: 2010
    Source: Native Plants Journal. 11(1): 65-76
    Publication Series: Scientific Journal (JRNL)
    Station: Pacific Northwest Research Station
    PDF: View PDF  (4.16 MB)


    We assessed various combinations of storage factors: bag type, temperature, duration, and antifungal pre-storage treatments for white oak acorn storage, using Oregon white oak (Quercus garryana Douglas ex Hook. [Fagaceae]) acorns from 7 seed sources. Acorn viability remained high (84%), even after 2 y of refrigerated storage, but the majority of these acorns germinated between 6 and 12 mo after entering storage. Germination during storage differed significantly by seed source. The likelihood of successful storage of Oregon white oak acorns was increased by placing washed, healthy-appearing acorns in storage at a near-freezing temperature soon after collection. Sealed conventional freezer bags or specialized gas-permeable plastic bags were equally effective in maintaining viability. For 6-mo storage under the best treatment combination, 77% of acorns remained viable but ungerminated in storage, compared to 89% viability prior to storage.

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    Devine, Warren D.; Harrington, Constance A.; Kraft, Joseph M. 2010. Acorn storage alternatives tested on Oregon white oak. Native Plants Journal. 11(1): 65-76.


    Quercus garryana, seeds germination, storage, restoration

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