The influence of green light on the germination of tomato seeds, the amount of green pigments in the leaves, the activity of photosystem 2, and the parameters of the leaves were studied. Tomato plants were grown in an experimental plot on the plots with an area of 1 m2 . The pilot plants were coated with atransparent film transmitting light at wavelength of 420-480nm, 490-580nm and 620-680 nm during the growing season. It was found that green light (GL), like blue (BL) and red (RL) light, regulates metabolic processes in plants through its receptors.

Keywords : Tomato, Seed Germination, Chlorophyll, Carotenoids, Photosystem 2.