The light quality that induces stomatal opening in the morning is mainly

The light quality that induces stomatal opening in the morning is mainly blue light. The photoreceptors of stomatal opening induced by blue light are directional pheromone, cryptochrome and zeaxanthin. Blue light refers to light with a wavelength of 400-480nm, and its energy is relatively high. Blue light exists in computer monitors, fluorescent lamps, mobile phones, digital products, display screens, LEDs and other light. Blue light in this wavelength range will increase the amount of macular toxin in the eyes and seriously threaten people's fundus health.