Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)
- Volume 5 Issue 2
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- Pages.127-135
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- 1985
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- 2287-5824(pISSN)
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- 2287-5832(eISSN)
Studies on Reserved Carbohydrates and Net energy Lactation ( NEL ) in Corn and Sorghum II. Synthesis and accumulation pattern of cell-wall constituents
옥수수 및 Sorghum에 있어서 탄수화물과 NEL 축적에 관한 연구 II. Cell-Wall Constituents 합성 및 축적형태
Abstract
The effects of morphological development and environmental temperature on synthesis and accumulation behavior of cell-wall constituents were studied in maize cv. Blizzard and sorghum cv. Sioux and Pioneer 931 at Muenchen Technical University from 1979 to 1981. Various growth stages of maize and sorghum plants were grown on field and phytotron at 4 temperature regimes of 30/25, 25/20, 28/18 and 18/8 degree C and mid-summer sunlight over 13-hour days. The results are summarized as follow: 1. Cell-wall constituents in sorghum and maize plants were shown to have a great synthesis rates at early growth stage from growing point differentiation to final leaf visible. The highest concentration of cell wall contents were found at heading stage with 52-54% and 64-68% of neutral detergence fiber, and 30% and 45% of acid detergence fiber foe maize and sorghum, respectively. 2. The structural carbohydrates, cellulose and hemicellulose, were found as a main components of cell-wall constituents. Cellulose were mainly accumulated in stalks, while hemicellulose were an important cell wall components in leaves and panicle. 3. Synthesis rates of cell-wall constituents and non-strnctural carbohydrates were associated with increasing of temperature. Reserved carbohydrates such as fructosan, mono - and dissaccharose in plant were, however, declined when the temperature exceeded 30 deg C, during the accumulation of cellulose, hemicellulose and lignin were increased continuously. 4. Cell-wall constituents lowered digestibility and net energy accumulation in sorghum and maize plants. In a in vitro and in vivo trial, it was found a negative correlation between digestion dry matter and cell wall constituents, especially cellulose and lignin.
옥수수 및 sorghum 식물(植物)에 있어서 생육시기(生育時期)와 환경온도(環境溫度)가 cell-wall constituents의 합성(合成) 및 축적형태(蓄積形態)에 미치는 영향(影響)을 구명(究明)하기 위하여 옥수수의 Blizzard와 sorghum의 Sioux 및 Pioneer 931 품종(品種)을 공시재료(供試材料)로 하여 포장(圃場) 및 Phytotron 시험(試驗)을 실시(實施)하였다. Phytotron의 주(晝)/야간(夜間) 실내온도(室內溫度)는 30/25, 25/20, 28/18 및
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