Skip to Main Content
The effects of temperature treatment on photosynthesis of pitch pine from northern and southern latitudesAuthor(s): F. Thomas Ledig; Joseph G. Clark; Allen P. Drew
Source: Botanical Gazette 138(1):7-12
Publication Series: Miscellaneous Publication
PDF: View PDF (198 KB)
DescriptionPitch pine (Pinus rigida Mill.) seedlings were grown at constant temperatures of either 21 C or 29 C. Photosynthetic temperature and light response curves were determined after 59, 107, and 153 days. Rates of Co2 uptake decreased with age, and the response to changes in light and temperature became less pronounced. Growth temperatures had no effect on the photosynthetic temperature optimum, and populations from Quebec, New Jersey, and Tennessee all had the same temperature optimum and response pattern. For the Tennessee population, growth at 21 C depressed the rate of photosynthesis at all temperatures at both 59 and 107 days, but stimulated it at 153 days. The Quebecpopulation showed no effect of premeasurement temperature at 59 or 153 days, and the New Jersey population was intermediate in this respect. Photosynthetic plasticity, defined as the difference between photosynthetic rates of seedlings grown at 21 C and those grown at 29 C, was related inversely to the degree of seasonal variation under which the populations had evolved.
- 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.
CitationLedig, F. Thomas; Clark, Joseph G.; Drew, Allen P. 1977. The effects of temperature treatment on photosynthesis of pitch pine from northern and southern latitudes. Botanical Gazette 138(1):7-12
- Silvical characteristics of pitch pine (Pinus rigida)
- Influence of seedbed, light environment, and elevated night temperature on growth and carbon allocation in pitch pine (Pinus rigida) and jack pine (Pinus banksiana) seedlings
- Maintenance and constructive respiration, photosynthesis, and net assimilation rate in seedlings of pitch pine (Pinus rigida Mill.)
XML: View XML