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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2008.pdf#page=49
Last checked: 07/15/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Sarkar, D.;
Bhowmik, P. C.;
DaCosta, M. |
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| Author Affiliation: | University of Massachusetts, Amherst |
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| Title: | Plant growth regulator and nitrogen affect seasonal carbohydrate partitioning in creeping bentgrass |
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| Section: | Graduate student contest
Other records with the "Graduate student contest" Section
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| Meeting Info.: | Philadelphia, Pennsylvania: January 7-10, 2008 |
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| Source: | Proceedings of the Sixty-Second Annual Meeting of the Northeastern Weed Science Society. Vol. 62, 2008, p. 31. |
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| Publishing Information: | Baltimore, Maryland: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Carbohydrate partitioning; Nitrogen fertilization; Physiological responses; Plant growth regulators; Total nonstructural carbohydrate content
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| Abstract/Contents: | "The concentrations of total nonstructural carbohydrates (TNC) in plants serve several important functions. The quantification of TNC in turfgrass has proven valuable in investigations of assimilate translocation and physiological response of turfgrass to environmental and cultural factors. The major TNC found in turfgrass shoots consists of the monosaccharides, glucose and fructose, the disaccharide sucrose, various oligosaccharides of the Β-2→6 linked polyfructosylsucrose type, starch, and long chain fructans. Seasonal variations of TNC in turfgrass roots and shoots determine their performance under stress conditions. Furthermore, TNC content can be influenced by different turfgrass management practices, such as nitrogen fertilization. However, limited information is available on the effects of N fertility on TNC of creeping bentgrass (Agrostis stolonifera L.) under putting green conditions. Trinexapac-ethyl (TE), a gibberellic acid synthesis inhibitor is a widely utilized plant growth regulator for improving putting green quality and performance. Some reports indicated improved performance of TE-treated turf under abiotic stress conditions, but physiological and biochemical mechanisms for improved stress tolerance is not clearly understood. The objectives of this study were to determine the effects of N fertilization and TE on total nonstructural carbohydrate partitioning of creeping bentgrass ('Penncross') under putting green conditions. The study was initiated in the spring of 2006 on a 4-yr old sand based putting green at Joseph Troll Turf Research Center, South Deerfield, MA. This experiment was arranged as a split-plot design, with nitrogen fertilization as the main plot (3, 5, and 8 lb N/1000 ft-2 year -1 ) and TE as the sub-plot (with and without TE) with four replications. Nitrogen was applied monthly from May to October, and TE (Primo® Maxx™) was applied (0.125 fl. oz/ 1000 ft-2 ) in three applications from April to August. Root and shoot samples were collected from each plot at 15-d intervals. Root and shoot samples were washed to remove soil and then oven dried (80° C) for 5 days. TNC were extracted from leaves and roots and the absorbance of the extract was measured at 515 nm using a spec trophotometer. Higher visual turf quality (8.5 to 9) was observed with increasing nitrogen rate th roughout the growing season. Visual turf quality was also improved 3 to 8 days after the each application of TE. Detailed results of seasonal carbohydrate partitioning as affected by nitrogen and TE application will be presented." |
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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):
Sarkar, D., P. C. Bhowmik, and M. DaCosta. 2008. Plant growth regulator and nitrogen affect seasonal carbohydrate partitioning in creeping bentgrass. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 62:p. 31. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2008.pdf#page=49
Last checked: 07/15/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 |
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