Skip to Main Content
Effect of storage temperature on viability of sugar, Jeffrey, and ponderosa pine seedAuthor(s): Gilbert H. Schubert
Source: Res. Note 100. Berkeley, CA: U.S. Department of Agriculture, Forest Service, California Forest and Range Experiment Station.
Publication Series: Research Note (RN)
PDF: Download Publication (245.0 KB)
DescriptionThe effect of storage temperature on the viability of sugar, Jeffrey, and ponderosa pine seed was studied to determine a suitable condition for each of the three species. Barton has reported -4° C. (25° F.) as being better for ponderosa pine than either -11° C. or -18° c. (12° F. or 0° F.), but storage temperatures have not been recommended for either sugar or Jeffrey pine seed. Before 1952, all seed stored at this Experiment Station was kept in air-tight containers at 41° F. (5° C.). However, germination tests on some seed lots, particularly sugar pine, indicated that storage at 41° F. might not be the optimum temperature for all species. Results of the present storage test indicate that seeds of all three pines maintain higher viability when stored at temperatures lower than 41° F. and that the optimum temperature differs for each.
- You may send email to firstname.lastname@example.org 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.
CitationSchubert, Gilbert H. 1955. Effect of storage temperature on viability of sugar, Jeffrey, and ponderosa pine seed. Res. Note 100. Berkeley, CA: U.S. Department of Agriculture, Forest Service, California Forest and Range Experiment Station. 3 p.
- Dwarfmistletoe removal and reinvasion in jeffrey and ponderosa pine, northeastern California
- The Chilling Optimum of Idaho and Arizona Ponderosa Pine Buds
- Effects of stratification and temperature on seed germination speed and uniformity in central Oregon ponderosa pine (Pinus ponderosa Dougl. ex Laws.).
XML: View XML