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Cytochromes are protein molecules that harbor a chromophore, a color-absorbing molecule. Depending on the wavelength of light striking the plant surface, the phytochromes are converted between different states or forms. When the phytochromes receive red light (660nm) they become the Pfr type, which is active and allow flowering to proceed. If far-red light (730nm) is detected the phytochrome becomes the Pr type. The Pr type is a biologically inactive form and so flowering cannot proceed. An indoor gardener can use this principle to initiate flowering even in a light cycle of 14 or more hours. During the dark period of a plant’s life, they can be given a brief pulse of red light. This changes the Pr type into the Pfr form and allows flowering to begin. Interestingly, these same phytochrome proteins play a crucial role in seed germination.
anyone know if this works on cannabis...and if so where can a light be bought that has that narrow a range(660nm)
anyone know if this works on cannabis...and if so where can a light be bought that has that narrow a range(660nm)