Examples Of LED Plant Growth Lights

Using chrysanthemums as the test material, 120 stem segments of uniformly growing and robust chrysanthemums were selected and divided into 2 groups, with 60 stems in each group. Cut a 12cm long leafy branch segment and shape the base into a wedge-shaped surface. Treat the base with 10PPM naphthoic acid for 12 hours, and then quickly reproduce in intelligent seedbeds with natural light and red seedbeds with plant growth lamps to observe and record the growth of the stem segment. Chlorophyll content was determined using the extraction method. On the 3rd, 6th, and 12th day of cultivation, 0.2g of leaves from the same part of each treatment were uniformly taken, cut into small pieces, and soaked in 1:1 acetone: anhydrous ethanol. After 24 hours of extraction in a 40 degree constant temperature incubator, the OD value at the wavelength of 652nm was measured and the chlorophyll content was calculated. Soluble sugars were measured using the 3,5-dinitrosalicylic acid method, and nitrate reductase (NR) activity was measured using the sulfonamide colorimetric method. The following results were obtained:
After 30 days of cultivation, the stem segments under red light took root earlier than those under natural light, resulting in a larger number of roots and a 100% rooting rate. The roots were numerous and strong. The leaves are dark green in color, the stems are thick and robust, and the seedlings grow vigorously. During the entire cultivation process, the growth of materials under red light was significantly better than under natural light, indicating that red light has a promoting effect on the rooting of Chrysanthemum morifolium (Table 1). Table 1 Comparison of Rooting of Thousand Head Chrysanthemum Branches under Red Light and Natural Light
During the growth process of stem segments, whether under natural or red light, the chlorophyll content first decreases and then increases. However, the chlorophyll content under red light is higher than that under natural light, indicating that red light has a significant promoting effect on the formation of chlorophyll, and this result becomes more pronounced with the increase of cultivation days (Table 2). The better growth of plants under red light may be due to the higher chlorophyll content in the plant, vigorous photosynthesis, and more carbohydrate synthesis, which provides sufficient material and energy for plant growth. Table 2 Chlorophyll and soluble sugar content under natural and red light
3. The soluble sugar content on the 9th day of cultivation was lower than that on the 15th day, and it decreased significantly under red light compared to natural light. The stem segments under red light also took root earlier than under natural light. After 15 days, the soluble sugar content under red light was higher than that under natural light, which may be related to the higher chlorophyll content under red light (Table 2) and more vigorous photosynthesis.
4. NR activity in stem segments under red light was significantly higher than under natural light (Table 2). Visible red light can promote nitrogen metabolism in chrysanthemum stem segments.
In short, red light has the effect of promoting the rooting of chrysanthemum stem segments, chlorophyll formation, carbohydrate accumulation, and absorption and utilization. The use of red light plant growth lamps to supplement light during the rapid propagation process has a significant effect on promoting the rapid rooting of various plants and improving the quality of seedlings. AiPlantLED plant growth lights simulate natural light to the fullest extent, providing precise spectral ranges for plant photosynthesis. Plants rely on the energy of light for photosynthesis to grow, bloom, and bear fruit. However, due to the ever-changing climate and lighting conditions in nature, plants cannot fully absorb the photosynthetic nutrients they need during different growth stages, which is detrimental to their growth, especially during the seedling stage. In this regard, scientifically reasonable artificial spectra have created good absorption and reflection conditions for plant growth.