광강도에 따른 음나무 유묘의 생장 및 광합성 특성

Abstract

This study was carried out to determine leaf photosynthetic capacity and growth characteristics of Kalopanax pictus Nakai seedlings under the different light condition. The seedlings grown under low light condition showed larger leaf area and petiole, and higher relative growth rate than those grown under high light condition. Chlorophyll contents as chlorophyll a, chlorophyll b, and chlorophyll a + b were high in the seedlings grown under high light condition compared to those grown in low light conditions. The mean absorption value of shade leaf within photosynthetically active radiation (400-700 ㎚) was slightly higher than that of sun leaf. Leaf photosynthetic capacity of seedling was variable under the different light conditions. Seedling grown under high light condition had the higher photosynthetic capacity. Leaf photosynthetic rates under forestry and nursery were 700 and 300 μ㏖·m−2 · s−1, respectively. However, leaf photosynthetic rates under high and low light conditions were 500 and 300 μ㏖ · m−2 · s−1, respectively.