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논문 기본 정보

자료유형
학술저널
저자정보
김병호 (경상대학교 농과대학) 김태환 (경상대학교 농과대학 축산진흥연구소) 김기원 (진주산업대학교) 정우진 (경상대학교 농과대학) 전해열 (밀양산업대학교)
저널정보
한국초지조사료학회 한국초지조사료학회지 한국초지조사료학회지 제15권 제3호
발행연도
1995.1
수록면
157 - 163 (7page)

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The objective of this study is to obtain the basic data for investigating the effects of organic reserves on winter survial or regrowth yield. Dry matter, nitrogen and non-structural carbohydrate content of plants grown under $5^{\circ}C$ or $20^{\circ}C$ of culture temperature during 25 days were investigated. The dry matter content of leaves and roots were significantly reduced under $5^{\circ}C$ compared with $20^{\circ}C$culture condition. Comparing with the dry matter per plant under $20^{\circ}C$, those in leaves and roots under $5^{\circ}C$ decreased to 25% and 10%, respectively, after 25 days of temperature treatment. Total nitrogen content in leaves under $20^{\circ}C$ and $5^{\circ}C$ increased to 68% and 39% compared to the initial lenel(day O), respectively, during 25 days after temperature treatment, Nitrogen content in roots highly increased under 5 C while there was a little change under $20^{\circ}C$ condition. The nitrogen contents in roots under $5^{\circ}C$ and $20^{\circ}C$ were 39.0 and 30.8mgJg DM, respectively, after 25 days of temperature treatment. Total contents of soluble carbohydrate in both leaves and roots under $5^{\circ}C$ were higher than those under $20^{\circ}C$ condition. After 25 days of temperature treatment under$5^{\circ}C$ , their contents in leaves and roots were 1.4 and 2.0 times higher than those of under $20^{\circ}C$ condition. Stach atent in roots under $20^{\circ}C$ was less changed, while thatof under $5^{\circ}C$ greatly increased from 64.8 to 178.7mglg DM duling 25 days. 'Ihese results clearly showed that an accumulation of both nitrogen and non-structural carbohydrate in the plants occured under low temperature condition.e condition.

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