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| Web URL(s): | http://usgatero.msu.edu/v10/n20.pdf
Last checked: 10/06/2011
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | DaCosta, Michelle;
Hoffman, Lindsey;
Ebdon, J. Scott;
Watkins, Eric |
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| Author Affiliation: | DaCosta: Assistant Professor; Hoffman: Graduate Student; Ebdon: Associate Professor, Department of Plant, Soil and Insect Sciences, University of Massachusetts, Amherst, MA; Watkins: Associate Professor, Deptartment of Horticultural Science, University of Minnesota, St. Paul, MN |
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| Title: | Physiological factors associated with perennial ryegrass freezing tolerance |
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| Source: | USGA Turfgrass and Environmental Research Online. Vol. 10, No. 20, October 15 2011, p. [1-6]. |
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| Publishing Information: | Far Hills, NJ: United States Golf Association, Green Section |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Biochemistry; Carbohydrates; Cold resistance; Crown; Lolium perenne; Overwintering; Physiological functions; Regional variation
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| Abstract/Contents: | "Perennial ryegrass (Lolium perenne) is a cool-season turfgrass species that can exhibit significant freezing injury in northern climatic regions. Field and growth chamber evaluations of perennial ryegrass germplasm collected from the United States, Asia, and Europe led to identification of accessions with superior freezing tolerance compared to many commercially available cultivars. The objective of this study was to quantify physiological and biochemical changes occurring in overwintering perennial ryegrass crowns during the cold acclimation period. Four perennial ryegrass accessions with contrasting freezing tolerances were selected, including two freezing-tolerant accessions (Tol-1 and Tol-2) and two freezing-susceptible accessions (Sus-1 and Sus-2). Results include: Tol-1 exhibited the most rapid accumulation of water soluble carbohydrates in crowns during acclimation, followed by Tol-2. Tol-2 exhibited higher capacity to alter membrane composition (individual lipid classes and unsaturated fatty acid levels) that help to maintain cell membrane integrity at low temperatures. Based on the analysis of two tolerant accessions, superior cold adaptation in perennial ryegrass was associated with higher accumulation of water soluble carbohydrates and greater capacity to alter membrane lipid composition." |
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| Language: | English |
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| References: | 16 |
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| Note: | Summary as abstract
Pictures, color
Tables
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
DaCosta, M., L. Hoffman, J. S. Ebdon, and E. Watkins. 2011. Physiological factors associated with perennial ryegrass freezing tolerance. USGA Turfgrass Environ. Res. Online. 10(20):p. [1-6]. |
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| Web URL(s):
http://usgatero.msu.edu/v10/n20.pdf
Last checked: 10/06/2011
Requires: PDF Reader |
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MSU catalog number: b3952822a |
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