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| Publication Type:
| Refereed |
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| Author(s): | Fry, J. D.;
Lang, N. S.;
Clifton, R. G. P. |
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| Author Affiliation: | Fry: Dept. of Horticulture and Forestry, Kansas State Univ., Manhattan, KS; Lang and Clifton: Department of Horticulture, Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center, Baton Rouge, LA |
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| Title: | Freezing resistance and carbohydrate composition of 'Floratam' St. Augustinegrass |
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| Source: | HortScience. Vol. 26, No. 12, December 1 1991, p. 1537-1539. |
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| Publishing Information: | Alexandria, Virginia: American Society for Horticultural Science |
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| # of Pages: | 3 |
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| Keywords: | TIC Keywords: Carbohydrate concentration; Cold resistance; Cultivar evaluation; Stenotaphrum secundatum
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| Cultivar Names: | Floratam |
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| Abstract/Contents: | "'Floratam' St. Augustinegrass [Stenotaphrum secundatum (Walt.) Kuntze] stolons were sampled from the field between October and March to determine potential changes in lethal low temperatures and nonstructural carbohydrate composition. Lethal temperatures determined by electrolyte leakage ranged from - 6.1 to - 5.3C. Little variability in lethal temperatures over sampling dates indicated that 'Floratam' St. Augustinegrass did not readily acclimate to cold temperatures. Starch was the carbohydrate present in highest concentration in 'Floratam' stolons, with levels ranging from 7.7 to 12.4 mg/100 mg dry weight. Sucrose concentrations varied from 2.4 to 5.7 mg/100 mg dry weight. Glucose and fructose were also present in 'Floratam' stolons at lower concentrations. A slight increase in sucrose and decrease in starch were observed between November and December, when low temperatures resulted in chlorophyll loss and turf was <25% green. On all other sampling dates, changes in sucrose and starch were variable. Changes in concentration of total nonstructural carbohydrates or soluble sugars did not seem to influence the freezing resistance of 'Floratam' St. Augustinegrass." |
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| Language: | English |
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| References: | 17 |
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| Note: | Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Fry, J. D., N. S. Lang, and R. G. P. Clifton. 1991. Freezing resistance and carbohydrate composition of 'Floratam' St. Augustinegrass. HortScience. 26(12):p. 1537-1539. |
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