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| Web URL(s): | https://www.dl.sciencesocieties.org/publications/cs/articles/41/3/810
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| Publication Type:
| Refereed |
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| Author(s): | Suter, Daniel;
Nösberger, Josef;
Lüscher, Andreas |
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| Author Affiliation: | Institute of Plant Sciences, Swiss Federal Institute of Technology, Zurich, Switzerland |
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| Title: | Response to perennial ryegrass to free-air CO2 enrichment (FACE) is related to the dynamics of sward structure during regrowth |
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| Section: | Crop quality and utilization
Other records with the "Crop quality and utilization" Section
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| Source: | Crop Science. Vol. 41, No. 3, May/June 2001, p. 810-817. |
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| Publishing Information: | Madison, WI: Crop Science Society of America |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Lolium perenne; Carbon dioxide; Regrowth; Regrowth studies; Pressure; Photosynthesis
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| Abstract/Contents: | "At elevated partial pressure of CO2 (60 Pa pCO2), field-grown perennial ryegrass (Lolium perenne L.) swards generally show a strong increase in photosynthesis of a the youngest fully expanded leaves but a weak yield response. We investigated this discrepenacy by determining the effects of elevated pCO2 on the dynamics of regrowth. During the whole regrowth period, swards at elevated pCO2 exhibited a greater dry mass of roots (68%), of pseudostems (34%), and of shoot necromass below cutting height (45%). During the first 4 wk of regrowth, when dry mass (DM) and leaf area index increased strongly, elevated pCO2 stimulated the yield, total DM, and leaf area by up to 46, 63, and 30%, respectively. Elevated pCO2 also resulted in an increase of almost 60% in the number of tillers during this period when the transmission of photosynthetically active radiation to the tiller bases was high. Towards the end of regrowth, however, the leaf area, total DM, and yield showed no net increase; under elevated pCO2, the number of tillers decreased strongly. These results indicate that there was not a strong sink for additionally fixed C during the second half of regrowth. The gap between leaf photosynthesis and yield at elevated pCO2 is suggested to be related to a loss of tillers when shading of tiller bases was strong and to a change in dry mass allocation." |
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| Language: | English |
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| References: | 45 |
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| See Also: | Other items relating to: Carbon sequestration of turf |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Suter, D., J. Nösberger, and A. Lüscher. 2001. Response to perennial ryegrass to free-air CO2 enrichment (FACE) is related to the dynamics of sward structure during regrowth. Crop Sci. 41(3):p. 810-817. |
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| Web URL(s):
https://www.dl.sciencesocieties.org/publications/cs/articles/41/3/810
Last checked: 05/05/2017
Access conditions: Item is within a limited-access website
https://www.dl.sciencesocieties.org/publications/cs/pdfs/41/3/810
Last checked: 05/05/2017
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: SB 183 .C7 |
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