Production of lettuce under indoor cultivation is highly affected by light intensity. In this study, we used shade cloth (commercial black net) to examine the effect of these condition on growth without an associated yield penalty of container-grown lettuce. Four levels of shading treatments (0%, 35%, 55%, and 75% referred to as Cont., S35, S55, and S75 with respect to Cont.) and two lettuce varieties (red and blue) were evaluated. Variety-specific growth responses were observed with respect to different levels of shading treatments. High growth of red lettuce was occurred in Cont. treatment despite plant height and leaf length being higher than Cont. However, under 35% shading treatment blue lettuce was higher than in control plants. The highest root length was observed 0% shading (Cont.) of both varieties. These results reinforce the idea that blue lettuce is the better leafy vegetable rather than red lettuce for indoor cultivation related to lower light intensity environment conditions.

Abstract
1. 서 론
2. 재료 및 방법
    2.1. 연구재료
    2.2. 연구방법
3. 결과 및 고찰
    3.1. 지상부 생육
    3.2. 지하부 생육
    3.3. 생체중과 건물중
4. 결 론
REFERENCES

• 주진희(건국대학교 녹색기술융합학과) | Jin-Hee Ju (Department of Green Technology Convergence, College of Science Technology, Konkuk University, Chungju 27478, Korea)
• 김태연(건국대학교 대학원 녹색기술융합학과) | Tae-Yeon Kim (Department of Green Technology Convergence, Graduate School of Konkuk University, Chungju 27478, Korea)
• 윤용한(건국대학교 녹색기술융합학과) | Yong-Han Yoon (Department of Green Technology Convergence, College of Science Technology, Konkuk University, Chungju 27478, Korea) Corresponding author