Journal of Korean Society of Forest Science (한국산림과학회지)
- Volume 81 Issue 1
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- Pages.11-20
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- 1992
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- 2586-6613(pISSN)
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- 2586-6621(eISSN)
Effects of Different Light Intensities and Nutrition Conditions on Photosynthesis and Ribulose-Diphosphate Carboxylase Activity of Quercus acutissima Carr. Seedlings
광도(光度)와 양료(養料) 조건(條件)을 달리 했을 때 상수리나무묘목(苗木)의 광합성(光合成)과 Ribulose-Diphosphate Carboxylase의 활성(活性)에 미치는 영향(影響)
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Woo, Su Young
(Department of Forest Resources, College of Agriculture & Life Science, Seoul National University) ;
- Lee, Don Koo (Department of Forest Resources, College of Agriculture & Life Science, Seoul National University)
- Received : 1991.12.31
- Published : 1992.03.31
Abstract
This study was conducted to compare chlorophyll contents, photosynthetic abilities, and ribulose-diphosphate (RuDP) carboxylase activities of Quercus acutissima seedlings grown with and without cotyledons under different light intensities and different nutrient levels. The results obtained in this study were as follows : 1. Chlorophyll contents were not significantly different among the light intensities except for 25% of full sunlight at the last harvest time. 2. RuDP carboxylase activity increased with increasing light intensity. 3. Photosynthetic abilities of seedlings grown under full and 75% of sunlight were significantly higher than that under 25% of full sunlight. 4. RuDP carboxylase activity was more related with chlorophyll a contents(r=0.792) than chlorophyll b contents(r=0.314). 5. RuDP carboxylase activities of the seedlings received at 1 or 2% addition rates of nutrients under 75% of full sunlight were higher than that at 0.5% addition rates.
본(本) 연구(硏究)의 목적(目的)은 자엽(子葉)의 유무(有無), 광도(光度) 및 양료조건(養料條件)을 변화(變化)시켜 주었을 때 상수리나무(Quercus acutissima Carr.) 묘목(苗木)의 엽록소합량(葉綠素合量), 광합성능력(光合成能力), 그리고 ribulose-diphosphate(RuDP) carboxylase의 활성(活性)을 알아보는 것이다. 본(本) 연구(硏究)에서 얻은 결과(結果)를 요약(要約)하면 다음과 같다. 1. 마지막 수확에서 전광의 25% 조건(條件)을 제외한 모든 광도(光度) 아래서 엽록소(葉綠素) 합량(合量)은 거의 비슷했다. 2. 전광, 전광의 75% 조건(條件)에서 광합성능력(光合成能力)은 전광의 25% 조건보다 더 좋게 나타났다. 3. RuDP carboxylase의 활성(活性)은 광도(光度)가 증가할 수록 커졌다. 4. RuDP carboxylase 활성(活性)은 엽록소(葉綠素) a의 합량(合量)이(r=0.792) 엽록소(葉綠素) b의 합량(合量)(r=0.314) 보다 더 상관(相關) 관계가 높았다. 5. 전광의 75% 조건(條件)에서 1, 2% 양료(養料) 조건(條件)으로 사용하였을 때 RuDP carboxylase의 활성(活性)은 0.5% 양료(養料) 조건(條件)에 비해서 높았다.
Keywords
- Quercus acutissima;
- light intensity;
- chlorophyll content;
- photosynthetic ability;
- ribulose-diphosphate(RuDP) carboxylase activity;
- nutrient level