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| Web URL(s): | https://dl.sciencesocieties.org/publications/cs/articles/40/5/1368
Last checked: 05/04/2017
https://dl.sciencesocieties.org/publications/cs/pdfs/40/5/1368
Last checked: 05/04/2017
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Xu, Qingzhang;
Huang, Bingru |
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| Author Affiliation: | Department of Horticulture, Forestry, and Recreation Resources, Kansas State University, Manhattan, KS |
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| Title: | Effects of differential air and soil temperature on carbohydrate metabolism in creeping bentgrass |
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| Section: | Turfgrass science
Other records with the "Turfgrass science" Section
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| Source: | Crop Science. Vol. 40, No. 5, September/October 2000, p. 1368-1374. |
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| Publishing Information: | Madison, WI: Crop Science Society of America |
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| # of Pages: | 7 |
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| Keywords: | TIC Keywords: Air temperature; Soil temperature; Temperatures; Carbohydrates; Metabolism; Agrostis stolonifera; Heat stress; Shoots; Roots; Respiration; Carbon; Total nonstructural carbohydrate content; Canopy
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| Cultivar Names: | L-93; Penncross |
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| Abstract/Contents: | "Bentgrass quality often declines under high temperature conditions. The physiological mechanisms of heat stress injury in creeping bentgrass are not well understood. the objective of this study was to determine the relative importance of air vs. soil temperature in the regulation of carbohydrate metabolism in two cultivars of creeping bentgrass (Agrostis palustris Huds.), 'L-93' and 'Penncross'. Shoots and roots of both cultivars were exposed to four differential air/soil temperatures: 20/20 (control), 20/35, 35/20, and 35/35Ā°C in growth chambers and water baths. Under high soil (20/35) and high air/soil (35/35Ā°C) temperature conditions, canopy net photosynthetic rate (P^D[n) of L-93 and Penncross decreased dramatically; however, respiration rates of whole plants (R^D[p^D[lā^D[n^D[t) and roots (R^D[rāā^D[t) increased to levels above those at 20/20 and 35/20Ā°C within 8 d of tratment and then decreased to lower levels by 21 d after treatment. At 35/35Ā°C, daily carbon consumption was 2 to 5 times carbon production for L-93 and 3.5 to 12 times for Penncross. At 20/35Ā°C, carbon consumption exceeded production within 10 d of treatment for both cultivars. Total nonstuctural carbohydrate (TNC) contents in shoots and roots were reduced at 20/35, 35/20, and 35/35Ā°C, compared to that at 20/20Ā°C. Reducing soil temperature while exposing shoots to high temperature (35/20Ā°C) increased P^D[n and carbohydrate content and reduced the carbon consumption to production ratio. The results suggested that roots play more important role than shoots in the mediation of carbohydrate responses to high air temperatures or high soil temperatures. High soil temperature alone or combined with high air temperature caused imbalance between photosynthesis and respiration and decreases in carbohydrate abailability, which could contribute to the decline in shoot and root growth under high temperature conditions." |
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| Language: | English |
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| References: | 41 |
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| Note: | Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Xu, Q., and B. Huang. 2000. Effects of differential air and soil temperature on carbohydrate metabolism in creeping bentgrass. Crop Sci. 40(5):p. 1368-1374. |
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https://dl.sciencesocieties.org/publications/cs/articles/40/5/1368
Last checked: 05/04/2017
https://dl.sciencesocieties.org/publications/cs/pdfs/40/5/1368
Last checked: 05/04/2017
Requires: PDF Reader |
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MSU catalog number: SB 183 .C7 |
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