Fig. 2.
Epidermal cells carrot roots observed under Olympus fluorescent microscope (×100) showed carotene pigmentation responsible for orange color of carrots (left figure represents root cells of carrot grown in 0.6 mm perlite supplied with 50% nutrient solution, and the right figure is the root cells of carrot grown in 0.3 mm perlite with 50% nutrient solution).