Title: Germination of CO2-enriched Pinus taeda L. seeds and subsequent seedling growth responses to CO2 enrichment
Author: Hussain, M.; Kubiske, M. E.; Connor, K. F.;
Source: Functional Ecology 15, 344-350
Publication Series: Miscellaneous Publication
Description: 1. Pinus tuedli seeds, developed under ambient or elevated (ambient + 200 Ч1-1) [CO2], were collected from Duke Forest, North Carolina, USA in October 1998. Seeds were germinated in nutrient-deficient soil in either ambient or elevated [COJ (ambient + 200 Ч1-1) greenhouse chambers and allowed to grow for 120 days. 2. Seeds that developed in elevated [CO2 had 91 and 265% greater weight and lipid content, respectively, and three times the germination success, compared to those developed in current ambient [CO2]. 3. Seedlings from the elevated [CO2] seed source had significantly greater root length and more needles regardless of greenhouse chamber, but there were no treatment effects on tissue or total biomass. 4. Severely limiting nutrient conditions resulted in significant photosynthetic downregulation by seedlings grown in greenhouse chambers with elevated [CO2], regardless of seed source. 5. Our hypothesis that greater seed reserves from CO2 enrichment would synergistically affect seedling growth responses to elevated [CO2] was not strongly supported. Nonetheless, seeds produced in a C02-enriched environment may have fundamental changes in their viability, chemistry and germination that may affect reproduction.
Keywords: Elevated CO2, Pinus taeda, seed germination, seed lipids, seed production
- 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 email@example.com to request a hard copy of this publication. (Please specify exactly
which publication you are requesting and your mailing address.)
XML: View XML
Hussain, M.; Kubiske, M. E.; Connor, K. F. 2001. Germination of CO2-enriched Pinus taeda L. seeds and subsequent seedling growth responses to CO2 enrichment. Functional Ecology 15, 344-350
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility