You are here: Home
/ Publication Information
Title: Estimates of genetic parameters for oleoresin and growth traits in juvenile loblolly pine
Author: Roberds, James H.; Strom, Brian L.; Hain, Fred P.; Gwaze, David P.; McKeand, Steven E.; Lott, Larry H.;
Source: Can. J. For. Res. 33: 2469-2476 (2003)
Publication Series: Miscellaneous Publication
Description: In southern pines of the United States, resistance to attack by southern pine beetle, Dendroctonus frontalis Zimmermann, is believed to principally involve flow of oleoresin to beetle attack sites. Both environmental and genetic factors are known to affect the quantity of oleoresin flow in loblolly pine, Pinus taeda L., but little is known about the genetic contribution to phenotypic variation in this trait. Here we report estimates of genetic variation in oleoresin flow and growth traits for a population of this species. Oleoresin yield, total height, and diameter were measured on 10- and 11-year-old trees from an experimental test in Santa Rosa County, Florida. Trees were from 72 full-sib families produced by mating 48 parents according to a disconnected partial diallel mating design. Resin yield was determined from breast-height samples collected at two times: once in the summer of 1999 when latewood was being produced (summer resin flow), and once in the spring of 2000 during earlywood formation (spring resin flow). All traits studied were found to be highly genetically variable and to have much greater additive than dominance variance. Estimates of narrow-sense heritability for spring and summer resin flow were in the moderate range and are comparable to values obtained for the growth traits. Additive genetic correlations between oleoresin yield and the growth traits were positive and moderately high, suggesting that directional selection to improve growth in loblolly pine will also result in increased production of oleoresin.
- 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.
- 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.)
XML: View XML
Roberds, James H.; Strom, Brian L.; Hain, Fred P.; Gwaze, David P.; McKeand, Steven E.; Lott, Larry H. 2003. Estimates of genetic parameters for oleoresin and growth traits in juvenile loblolly pine. Can. J. For. Res. 33: 2469-2476 (2003)
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility