Skip to Main Content
Cone Characteristics and Seed Quality 10 Years After An Uneven-Aged Regeneration Cut In Shortleaf Pine StandsAuthor(s): Kenneth J. Grayson; Robert F. Wittwer; Michael G. Shelton
Source: Gen. Tech. Rep. SRS–48. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. pp 310-314
Publication Series: Miscellaneous Publication
PDF: View PDF (156 KB)
DescriptionCone characteristics and seed quality for 16 released (stand density 14 square meters per hectare) and 16 unreleased (stand density 28 square meters per hectare) shortleaf pine (Pinus echinata Mill.) trees were described by d.b.h. class (28, 33, 38, 43 centimeters) and crown position (upper south, upper north, lower south, and lower north). The 38-centimeter d.b.h. class produced significantly heavier cones than other classes. Average cone dry weight for released trees did not differ significantly by crown position, but the lower north crown position produced significantly lighter cones for unreleased trees. Total seeds per cone did not differ significantly between released and unreleased trees, by d.b.h. class, or crown position; the overall average was 46 seeds per cone. Upper crown positions produced a higher percentage of sound seeds per cone (61 percent) than the lower crown positions (50 percent) for both released and unreleased trees. The percentage of sound seeds also differed significantly between released and unreleased trees with the 38- and 43-centimeter d.b.h. classes of released trees producing the highest percentage. Both released and unreleased trees produced significantly more sound seeds per cone in the upper south crown position (31 seeds per cone) compared to the other crown positions (averaging 25 seeds per cone). Seeds from released trees averaged 91 percent germination compared to 85 percent for unreleased trees.
- 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.
CitationGrayson, Kenneth J.; Wittwer, Robert F.; Shelton, Michael G. 2002. Cone Characteristics and Seed Quality 10 Years After An Uneven-Aged Regeneration Cut In Shortleaf Pine Stands. Gen. Tech. Rep. SRS–48. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. pp 310-314
- Distribution of Mature Cones, Conelets, and Old Cones in Shortleaf Pine-Oak Stands an Uneven-Aged Regeneration Cut
- Forcasting Shortleaf Pine Seed Crops in the Ouachita Mountains
- Biomass of shortleaf pine in a natural sawtimber stand in Northern Mississippi
XML: View XML