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| Web URL(s): | http://turf.rutgers.edu/research/abstracts/symposium2012.pdf#page=35
Last checked: 02/07/2012
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Cross, James W.;
Huang, Bingru;
Meyer, William A. |
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| Author Affiliation: | Department of Plant Biology and Pathology, Rutgers University |
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| Title: | Differentiating heat and drought as components of summer stress among experimental tall fescue genotypes |
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| Section: | Poster presentations
Other records with the "Poster presentations" Section
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| Meeting Info.: | New Brunswick, New Jersey: January 6, 2012 |
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| Source: | Proceedings of the Twenty-First Annual Rutgers Turfgrass Symposium. 2012, p. 34-35. |
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| Publishing Information: | New Brunswick, NJ: Center for Turfgrass Science, Rutgers, The State University of New Jersey |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Abiotic disorders; Comparisons; Cultivar evaluation; Drought stress; Festuca arundinacea; Heat stress; Stress tolerance
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| Abstract/Contents: | "Heat and drought are two abiotic stressors of turfgrass which are responsible for the decline of cool season grasses during the summer months. These two stresses are often grouped togehter and referred to as summer stress. While these two stresses often occure simultaneously, quantification and comparison of the stress induced decline caused by each stress individually will help both turfgrass managers and breeders combat this issue. Breeding of tall fescue (Lolium arundinacea) has recently produced cultivars which have made this grass, which was once suitable solely for low maintenance utility applications, a viable option for areas of moderate cultural intensity such as home lawns and athletic fields. This is attributed to these new cultivars being finer textured, more laterally growing, and darker in color. While tall fescue has been bred to be functionally more like turfgrass species such as perennial ryegrass (Lolium perenne L.) and Kentucky bluegrass (Poa pratensis L.), it continues to exhibit relatively high levels of tolerance to summer stress. Though this rather high summer stress tolerance is well documented, little research has been done to characterize it. This study has been set ip to determine whether heat stress or drought stress is the bigger factor contributing to the decline of tall fescue during summer months. Twenty-four fescue clones were selected based oon field performance as spaced plants; tweleve that were perceived to be tolerant and twelve that were perceived to be sensitive to summer stress. These twenty-four clones were subjected to heat and drought stress in combination and alone by placing them in growth chambers and controlling their temperature and water supply. A number of physiological measurements were taken including turf quality, relative water content, electrolyte leakage, and photochemical efficiency. Overall, the effects of heat+drought resulted in the most stressful conditions followed by drought alone and clones subjected to heat stress alone appeared to maintain their overall quality for the longest period. However, this is confounded by the performance of the plants selected as summer stress tolerant compared to the plants selected as summer stress sensitive. In the control, drought, and heat+drought treatments there were generally no significant differences between these two groups in any of the measurement parameters. Conversely, in the heat stressed plants, the selected summer stress tolerant group performed significantly better, in all measurement parameters, than the summer stress sensitive group. In addition, certain clones were found that performed well in only certain conditions, others were found that performed well under all conditions, while still others were found which performed poorly under all conditions." |
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| Language: | English |
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| References: | 0 |
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| See Also: | Other items relating to: Breeding for Drought |
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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):
Cross, J. W., B. Huang, and W. A. Meyer. 2012. Differentiating heat and drought as components of summer stress among experimental tall fescue genotypes. Proc. Rutgers Turfgrass Symp. p. 34-35. |
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| Web URL(s):
http://turf.rutgers.edu/research/abstracts/symposium2012.pdf#page=35
Last checked: 02/07/2012
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: b3696858 |
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Digitally in TIC by file name: rutsy2012 |
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