Skip to Main Content
-
Separating live from dead longleaf pine seeds: good and bad news
Author(s): James P. Barnett; R. Kasten Dumroese
Date: 2006
Source: Gen. Tech. Rep. SRS-92. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. pp. 81-84
Publication Series: Miscellaneous Publication
PDF: View PDF (139 KB)Note: This article is part of a larger document. View the larger documentDescription
Of all southern pine seeds, longleaf pine (Pinus palutris Mill.) are the most difficult to collect, process, treat, and store while maintaining good seed quality. As a result, interest in techniques for separating filled dead from live longleaf pine seeds has developed. The good news is that new technologies are becoming available to evaluate seed quality, but the bad news is that they seem to have limited application to longleaf pine. Tests suggest that incubating, drying, and separating, chlorophyll fluorescence, and near infrared techniques do not help improve longleaf pine seed quality. The incubating-drying-separating method is inefficacious because variability in the seed coat wing stub affects seed flotation. The chlorophyll fluorescence method measures changes in chlorophyll content as seeds mature or are damaged, but such changes do not seem to occur in pine seeds. The near infrared method seems to offer the best potential. The use of near infrared scanning technologies can determine changes in seed constituents, but we have not been able to determine which measurable seed constituents may change as viability declines.Publication Notes
- You may send email to pubrequest@fs.fed.us 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.
Citation
Barnett, James P.; Dumroese, R. Kasten. 2006. Separating live from dead longleaf pine seeds: good and bad news. Gen. Tech. Rep. SRS-92. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. pp. 81-84Related Search
- Guidelines for producing quality longleaf pine seeds
- Influence of pine straw harvesting, prescribed fire, and fertilization on a Louisiana longleaf pine site
- Longleaf Pine Seed Presowing Treatements: Effects on Germination and Nursery Establishment
XML: View XML
Show More
Show Fewer
https://www.fs.usda.gov/treesearch/pubs/23339