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What is the effect of the color of light on plants

The color of light reflects the physical quantity of light, the wavelength of light will show different light color. Higher plants have a very fine light receiving system and signal transduction system. In addition to higher plants contain a lot of pigment, but also contains some trace pigments, these pigments can feel the light trace information, such as the direction of the light, light duration, light intensity, spectrum, and the signal amplification, refers to the object can be changed with external light environment and respond accordingly. The effect of light on growth and development is from blue light to ultraviolet radiation and red light to near infrared radiation. At present, there are at least 3 types of receptors involved in the regulation of light response in higher plants. They are phytochrome, floral pigment or blue light -A receptor and UV -B receptor.

The physiological effects of radiation, violet and green light inhibited elongation growth and influence phototropism, chloroplast movement caused by blue light, red light promoted the elongation of plant growth hormone, UV is inhibited to inhibit stem elongation, promote the formation of anthocyanins, and lead to light, such as alpine flowers and plants are more gorgeous, rosulate, infrared to promote the extension of the growth of plant stems, seeds, infrared ray to promote spore germination, and improve plant temperature. UV-B radiation can damage the genetic material DNA of terrestrial higher plants, affect and inhibit photosynthesis.

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