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| Web URL(s): | http://turf.rutgers.edu/research/abstracts/symposium2012.pdf#page=41
Last checked: 02/08/2012
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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): | Koch, Eric;
Koch, Matthew;
Weibel, Eric;
Bonos, Stacy |
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| Author Affiliation: | Department of Plant Biology and Pathology, Rutgers University |
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| Title: | Screening perennial ryegrass cultivars for germination under salinity stress |
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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. 40-41. |
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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: Cultivar evaluation; Establishment rate; Germination; Irrigation water quality; Lolium perenne; Salinity stress; Water use restrictions
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| Abstract/Contents: | "Water restrictions are a current issue that many golf courses are facing. As these restrictions tighten there will be a need for identifying turfgrasses that can withstand irrigation from alternative water sources with higher than normal salt concentrations such as effluent water. This study reports on a screening technique for evaluating germination of turfgrass plants under saline conditions. Perennial ryegrass (Lolium perenne L.) is an important turfgrass species due to its ability to germinate quickly and provide a turf stand in a short period of time. Therefore, this species is used for overseeding dormant warm-season turfgrass on golf courses (a practice used by many golf courses worldwide.) However, irrigating perennial ryegrass with saline water has been shown to reduce both establishment and germination. Eight cultivars or selections (Apple GL, KSA, Palmer III, Zoom, Linn, Paragon GLR, ESP, RKS) of perennial ryegrass were evaluated under seven salinity treatments: Control; 0.25 dS/m; 1.0dS/,; 2.0dS/m; 3.0dS/m; 4.0dS/m; 5.0dS/m; 6.0 dS/m. SAline water was madee using equal quantities of NaCL and CaCl2 mixed with tap water. Three replicates of each cultivar within each salinity treatment were arranged in a completely random design. Sterilized soil from the Plant Biology Research and Extension Farm in Freehold, NJ was weighed and equal quantities were put into 4x4 inch plastic horticulture pots. Turfgrass plants were planted at a seeding rate of 7.44g/m2. Fertilizer was applied at a rate of 1.49 g of nitrogen/m2. Four hundred ml/m2 of each saline water treatment were applied to each pot three times/week to maintain soil moisture for the first two weeks. After two weeks, application of treatments were reduced to two times/week Saline water treatments were applied using a trigger sprayer (Spray Master, New Brunswick, New Jersey) to simulate overhead irrigation on a golf course. Two visual ratings and digital images were analyzed with SigmaScan. Visual ratings of seeding emergence were evaluated on a one to nine scale; one being poor seedling emergence, nine being the highest seedling emergence. Visual ratings of percent green were also collected. Digital image analysis was alos used to calculate percent green. Ratings were taken weekly for the six week study. Visual ratings of seedling emergence and percent green were reproted as a percentage of the control. Run 1 of the experiment occurred during winter of 2010 and run 2 occurred during spring of 2011. Significant differences were observed between treatments (across all cultivars) and between cultivars (across all treatments) for percent green and seedling emergence. However, in both runs of the experiment, there were no differences between cultivars within salinity treatments. Increased salinity treatments caused a reduction in seedling seedlings exposed to the 6 ds/m salinity treatment exhibit a 60%-77% reduction in seedling emergence and a 63%-77% reduction in visual percent green compared to the control. In most instances Linn, Zoom, and Paragon GLR had teh highest percent green values (visual ratings and digital image analysis) across both runs when averaged across all treatments. Linn has very course leaves and an upright growth habit, so both the digital image analysis and percent green ratings therefore are slightly skewed due to this cultivar's larger leaf blades. Interestingly, RKS, a cultivar selected for mature plant salinity tolerance, was among the least tolerant in thsi study. This supports previous research that mature plant salinity tolerance is unrelated to salinity tolerance at seedling stage (Hughes et al, 1975; Qian and Suplick, 2001). More research is needed to develop plants that are tolerant to salinity levels at every stage of growth." |
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| Language: | English |
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| References: | 2 |
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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):
Koch, E., M. Koch, E. Weibel, and S. Bonos. 2012. Screening perennial ryegrass cultivars for germination under salinity stress. Proc. Rutgers Turfgrass Symp. p. 40-41. |
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| Web URL(s):
http://turf.rutgers.edu/research/abstracts/symposium2012.pdf#page=41
Last checked: 02/08/2012
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b3696858 |
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