Shading is a key element in the control of light intensity and is usually used during the summer when sunlight is at its most intense. Succulents are ornamental crops that have beextremely popular because of their leaf structure and other characteristics. A study was conducted to determine the effects of shading on the growth and development as well as the anthocyanin content of two Echeveria species: Echeveria agavoides and E. marcus. Three levels of shading were used, namely no shading/full light treatment, partially shaded conditions, and well-shaded conditions, which were achieved by placement inside controlled growing chambers for 4 weeks. The results revealed the bolting of growth in both height and diameter for both species when grown under shaded and partially shaded conditions, which were abnormal compared withthe typical development. CIELAB color results also showed thata* was significantly affected by shading levels, exhibiting a higher positive value for succulents under full light or no shading. These results were consistent with the anthocyanin analysis, where the highest contents were identifiedinthe species grown under full light. The image analysis also confirmed a higher percentage area based on the smart segmentation for red pigments compared withthat for green pigments.

Introduction
 Materials and Methods
  Planting materials
  Experimental design, treatments and growthconditions
  Hunter’s CIELAB
  Anthocyanin analysis
  Image analysis
  Statistical analysis
 Results and Discussion
  Plant height and diameter
  Hunter’s CIELAB
  Anthocyanin analysis
  Image analysis
 References

• Raisa Aone M. Cabahug(Department of Environmental Horticulture, Sahmyook University, Natural Science Research Institute, Sahmyook University)
• Son Yil Soh(Department of Environmental Horticulture, Sahmyook University, Natural Science Research Institute, Sahmyook University)
• Sang Yong Nam(Department of Environmental Horticulture, Sahmyook University, Natural Science Research Institute, Sahmyook University) Corresponding author