![]() The above results indicated that 15–30% green light replacing red and blue light effectively increased the yield and nutritional quality of lettuce plants. Nitrate contents under G30, G60, and G90 decreased by 26.2, 40.3, and 43.4%, respectively. Soluble sugar contents under G60 and G90 increased by 39.4 and 19.4%, respectively. Plant stem length increased linearly with increasing green-to-blue light ratio (2) light transmittance of lettuce leaf under treatments employing green light was higher than that under RB, especially in the green region (3) stomatal density increased, whereas stomatal aperture area decreased with the increase in the relative amount of green light and (4) carbohydrate accumulation increased under G60 and G90. The results showed that: (1) shoot dry weight increased by 16.3 and 24.5% and leaf area increased by 11.9 and 16.2% under G30 and G60, respectively, compared with those under RB. ![]() ‘Tiberius’) plant growth and morphology, stomatal characteristics, light absorptance and transmittance, photosynthetic characteristics, and nutritional quality were investigated. In this experiment, four treatments were set up by adjusting the relative amount of green light as 0 (RB), 30 (G30), 60 (G60), and 90 (G90) μmol m −2 s −1, respectively, with a total photosynthetic photon flux density of 200 μmol m −2 s −1 and a fixed red-to-blue ratio of 4:1. ![]() Thus, the objective of this study was to investigate a moderate amount of green light, partially replacing red and blue light, for plant growth and development. However, few studies have investigated the appropriate and efficient way of using the green light for plant production. Green light, as part of the photosynthetically active radiation, has been proven to have high photosynthetic efficiency once absorbed by plant leaves and can regulate plant physiological activities. 2Key Laboratory of Energy Conservation and Waste Management of Agricultural Structures, Ministry of Agriculture, Beijing, China.1Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China.For example, what electron is being excited to what energy level/how much energy does it release when it falls back down? However, often we can change how many times this physical phenomenon happens per second, which determines the number of photons produced, and therefore the brightness.Lie Li 1,2 Yu-xin Tong 1,2 * Jun-ling Lu 1,2 Yang-mei Li 1,2 Xin Liu 1,2 Rui-feng Cheng 1,2 In real life, color/energy of the photon is determined by the actual physical phenomenon that is causing us to see this light. ![]() Instead, it would be changing the amplitude of the wave, or the number of photons! Increased watts results in more energy being released per second because more total photons are being released, not because each one is more energetic! For example, see problem 1B.9 - the light is violet with just a single wavelength, and the wattage is related to the number of total photons released. The brightness of a bulb changing wouldn't alter the frequency of the light or the energy of each photon. Our equation E photon = hv relates these two! Both are valid ways of viewing the energy of light. In our particle picture of light, we can consider the energy of each photon, E photon. In the wave picture of light, the frequency of the light is correlated with the energy of the light.
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