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| Web URL(s): | http://a-c-s.confex.com/crops/2008am/webprogram/Paper43134.html
Last checked: 02/24/2009 |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Rutledge, James;
Volenec, Jeffrey;
Jiang, Yiwei;
Reicher, Zachary |
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| Author Affiliation: | Jiang: Agronomy Department; Rutledge, Volenec, and Reicher: Purdue University-Agronomy Department, West Lafayette, Indiana |
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| Title: | Physiological response of rough bluegrass and creeping bentgrass to high temperature stress |
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| Section: | Graduate student poster competition: II. Diseases, genetics, physiology and technology (posters)
Other records with the "Graduate student poster competition: II. Diseases, genetics, physiology and technology (posters)" Section
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| Meeting Info.: | Houston, Texas: October 5-9, 2008 |
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| Source: | 2008 Joint Annual Meeting: [Abstracts][GSA/SSSA/ASA/CSSA/GCAGS/HGS]. 2008, p. 43134. |
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| Publishing Information: | [Madison, WI]: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America; Boulder, CO: Geological Society of America; Austin, TX: Gulf Coast Association of Geological Societies with the Gulf Coast Section of SEPM; Houston, TX: Houston Geological Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Chlorophyll content; Cultivar evaluation; Dry weight; Growth rate; Heat stress; Physiological responses; Poa trivialis; Relative water content
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| Abstract/Contents: | "Rough bluegrass (Poa trivialis L.) exists as both a difficult-to-control weed in cool-season turf and as a valuable overseeding species on bermudagrass (Cynodon sp.) golf greens. Despite its widespread distribution, little is known of its physiology. The objective of this study was to evaluate the physiological impact of high temperatures on 'Laser' and 'Pulsar' rough bluegrass and 'L93' creeping bentgrass (Agrostis palustris L.). The two rough bluegrass cultivars were selected because they exhibited a wide range of tolerance to summer stress in previous field studies. The study was a split-plot with three temperatures as main plots, and three cultivars and six harvest dates as subplots. Plants were established in a greenhouse for 60 days and then moved into one of three growth chambers at 23 (control), 28, or 33°C until destructively harvested 0, 10, 14, 21, 28, or 35 days after temperature treatments were induced. Shoot dry weight, relative water content in shoot tissue, chlorophyll content, growth rate and root viability all decreased for both rough bluegrass cultivars at 33°C compared to 23°C treatments. Membrane stability measured as electrolyte leakage rapidly increased in both rough bluegrass cultivars at 33°C after 21 days of exposure and reflected the rupturing of cells at high temperature. Total carotenoid content of rough bluegrass cultivars differed at 33°C, warranting further investigation. However, there was little separation in physiological measurements among the two rough bluegrass cultivars with the exception of carotenoid content. Rough bluegrass cultivars consistently exhibited poorer heat tolerance than creeping bentgrass for traits tested." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Rutledge, J., J. Volenec, Y. Jiang, and Z. Reicher. 2008. Physiological response of rough bluegrass and creeping bentgrass to high temperature stress. Joint Ann. Meet. p. 43134. |
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Last checked: 02/24/2009 |
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