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| Web URL(s): | https://archive.lib.msu.edu/tic/its/articles/2001jou317.pdf
Last checked: 09/29/2008
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| Publication Type:
| Refereed |
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| Author(s): | Li, D.;
Han, L.;
Christians, N. E.;
Minner, D. D. |
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| Author Affiliation: | Li, Christians, Minner: Department of Horticulture, Iowa State University, Ames, IA; Han: Research Institute Forestry, Wanshou Shan, Beijing, China |
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| Title: | Morphological changes of tall fescue in response to saturated soil conditions |
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| Section: | Physiology
Other records with the "Physiology" Section
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| Meeting Info.: | Toronto, Ontario, Canada: July 2001 |
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| Source: | International Turfgrass Society Research Journal. Vol. 9, No. Part 1, 2001, p. 317-322. |
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| Publishing Information: | Oakville, Ontario, Canada: International Turfgrass Society |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Soil moisture; Ethephon; IAA; Morphology; Festuca arundinacea; Oxygen deprivation; Ethylene; Root zone; Application rates; Hydration
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| Cultivar Names: | Finelawn |
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| Abstract/Contents: | "Low-oxygen condition (hypoxia) is a soil-related stress that affects grasses. Hypoxic conditions are common in turf areas and an understanding of the physiological responses of grasses to this condition is an important part of their management. The objectives of this research were to observe morphological changes and aerenchyma formation of tall fescue subjected to hypoxic conditions and to investigate the role of ethylene in these morphological and anatomical responses. 'Finelawn' tall fescue (Festuca arundicacea Schreb.) root system was subjected to water-saturated condition to induce hypoxia in the root zone. Separately, tall fescue growing in well-drained soil was subjected to 1.5, 2.5, and 4.0 μL L-1 ethylene, and 0.30, 0.45, and 0.60 mM 2-chloroethylphosphonic acid (ethephon). A second study involved the application of 0.1, 0.5, and 1 mM Ag+ and 1, 5, and 10 μM Co++ to 'Finelawn' tall fescue subjected to water saturation. In the third study, 'Finelawn' tall fescue was treated with 0.30 mM ethephon and then treated with 0.01, 0.05, and 0.1 mM indole-3-acetic Acid (IAA). Aerenchyma formed in the cortical tissue of the root-elongation zone when plants were kept under water-satured conditions and treated with exogenous ethylene. Eethylene concentration within plants increased under water-saturated conditions. Ag+ or Co++ application inhibited aerenchyma formation in plants subjected to a water-saturated root zone. These results indicate that internal ethylene was responsible for aerenchyma formation. An increased adaxial leaf angle was observed in plants grown under hypoxic conditions or treated with exogenous ethylene. Ag+ or Co++ did not change adaxial leaf angle, whereas IAA inhibited the change of adaxial leaf angle in plants treated with exogenous ethylene or maintained under hypoxic conditions." |
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| Language: | English |
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| References: | 23 |
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| Note: | Pictures, b/w
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Li, D., L. Han, N. E. Christians, and D. D. Minner. 2001. Morphological changes of tall fescue in response to saturated soil conditions. Int. Turfgrass Soc. Res. J. 9(Part 1):p. 317-322. |
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https://archive.lib.msu.edu/tic/its/articles/2001jou317.pdf
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MSU catalog number: SB 433 .I52 v. 9 |
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