광도,온도 및 CO2의 농도가 헛개나무의 광합성에 미치는 영향
Effect of Light Intensity, Temperature and CO2 Concentration on Photosynthesis in Hovenia dulcis Thunb
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Abstract
This study was carried out to know the effect of light intensity, temperature and CO₂concentration on photosynthesis and transpiration in Hovenia dulcis Thunb. Light compensation point was 2.4 μmol m-²s-¹and light satruation point was 1033 μmol m-²s-¹. The optimum temperature for photosynthesis was 25℃ at 1000 μmol m-²s-¹light intensity. co compensation point was 67 vpm and CO₂saturation point was 707 vpm. Transpiration rate was increased to about 2 mmol m-²s-¹with increasing of light intensity to 1750 μmol m-²s-¹and to above 4 mmol m-²s-¹with increasing of temperature from 18 to 36 . however It was gradually reduced as CO₂concentration increased from 21 vpm to 800 vpm.