Figure 4 | Scientific Reports

Figure 4

From: Enhanced growth and cardenolides production in Digitalis purpurea under the influence of different LED exposures in the plant factory

Figure 4

Scanning electron micrographs of stomata in leaves of Digitalis purpurea L. as affected by (a) Red, (b) Blue, (c) Fluorescent light, and (d–f) combined LEDs of red and blue light [RB (1:1, 8:2, and 2:8) respectively] under a closed type plant factory. (g) Stomata under a light microscope (bar = 4 μm) and (h) under scanning electron micrographs.

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