Germination of CO2-enriched Pinus taeda L. seeds and subsequent seedling growth responses to CO2 enrichment

Increasing atmospheric carbon dioxide concentration, [CO2], has profound effects on growth and development of trees. Adoubling of [C02] generally stimulates photosynthesis (Murray 1995; Saxe, Ellsworth and Heath 1998) and can lead to a substantial increase in tree growth (Poorter 1993). For example, doubling [C02] increased the rate of photosynthesis per unit leaf area (A) of Pinus taeda by 14-146% (Ellsworth 1999; Liu and Teskey 1995; Thomas, Lewis and Strain 1994; Tissue et al. 1996; Tissue et al. 1997), and increased relative growth by 40-233% (DeLucia et al. 1999; Sionit et al. 1985; Thomas et al. 1994), we suggest that in very young seedlings, elevated [C02] effects may interact with internal factors such as seed N or C reserves. Thus internal and external factors that regulate growth atthe seedling stage may act acooectively to regulate subsequent seedling growth (Corbineau and Come 1995). 2001 This article is in PDF format (file size: 1378 kb). To download this article, right click on the link immediately below and choose "save target as". To view the article, left click the link immediately below.
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Germination of CO2-enriched Pinus taeda L. seeds and subsequent seedling growth responses to CO2 enrichment   (2001)

Increasing atmospheric carbon dioxide concentration, [CO2], has profound effects on growth and development of trees. Adoubling of [C02] generally stimulates photosynthesis (Murray 1995; Saxe, Ellsworth and Heath 1998) and can lead to a substantial increase in tree growth (Poorter 1993). For example, doubling [C02] increased the rate of photosynthesis per unit leaf area (A) of Pinus taeda by 14-146% (Ellsworth 1999; Liu and Teskey 1995; Thomas, Lewis and Strain 1994; Tissue et al. 1996; Tissue et al. 1997), and increased relative growth by 40-233% (DeLucia et al. 1999; Sionit et al. 1985; Thomas et al. 1994), we suggest that in very young seedlings, elevated [C02] effects may interact with internal factors such as seed N or C reserves. Thus internal and external factors that regulate growth atthe seedling stage may act acooectively to regulate subsequent seedling growth (Corbineau and Come 1995).

Author: Hussain, M.; Kubiske, M. E. ; Connor, K. F.

Source: Functional ecology. Vol. 15 (2001).:p. 344-350 : ill.

Citation: 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. Vol. 15 (2001).:p. 344-350 : ill..