한국초지조사료학회지 (Journal of The Korean Society of Grassland and Forage Science)
- 제21권4호
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- Pages.259-264
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- 2001
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- 2287-5824(pISSN)
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- 2287-5832(eISSN)
크리핑 벤트그라스의 월동중 비구조적 탄수화물의 변화
Changes in Non-Structural Carbohydrate in Overwintering Creeping Bentgrass (Agrostis palustris)
- Kim, Dae-Hyun (Department of Animal Science and Institute of Agriculture Science and Technology, College of Agriculture, Chonnam National University) ;
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Jung, Woo-Jin
(Department of Animal Science & Institute of Agriculture Science and Technology, College of Agriculture, Chonnam National University) ;
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Lee, Bok-Rye
(Department of Animal Science & Institute of Agriculture Science and Technology, College of Agriculture, Chonnam National University) ;
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Kim, Kil-Yong
(Department of Biological & Environmental Chemistry, College of Agriculture, APSRC, Chonnam National University) ;
- Kim, Tae-Hwan (Department of Animal Science & Institute of Agriculture Science and Technology, College of Agriculture, Chonnam National University)
- 발행 : 2001.12.01
초록
To investigate the physiological responses to naturally occurring winter freezing stress in creeping bentgrass, changes in carbohydrates were monitored during winter period. Turf quality and leaf growth was nearly parallel with temperature fluctuation. The concentration of glucose, fructose and sucrose in both shoot and root gradually increased from November to January, and then sharply decreased until April. Sucrose was the largest pool of soluble sugars. Fructan also slightly accumulated in both shoot and roots from November to February. Fructan hydrolysis in both organs was found to be much active between February to April. Shoot contained largely higher carbohydrate content in all compounds examined than roots did. Fructan was found to be a main carbohydrate storage form, showing the highest concentration (176.7 and 126.7 mg g-' DW for shoot and root in February). The depolymerization of fructan from February coincided with the high declines in mono- and disaccharide. These results suggest that the accumulation of non-structural carbohydrate until January could be associated with freezing tolerance, and the active decrease from February with shoot regrowth.