At present, LED artificial light sources account for a large proportion of power consumption in plant factories, and reducing the power consumption of lighting is an important way to save operating costs. The development and application of high-efficiency, safe and environmentally friendly new light sources is imperative
OK, with its inherent advantages, LED is considered by the industry as the most promising product to replace other artificial light sources in the next ten years. The 21st century is known as the "first century of light. Looking to the future, the research and application of LED plant factories will
Get popular quickly.
The application prospects of LED plant lights in plant tissue culture, the application prospects of LED plant lights in plant tissue culture
At present, fluorescent lamps are mostly used in the factory production of plant tissue culture
As a light source, it has shortcomings such as low light efficiency, large heat generation, and high energy consumption. The energy consumption cost can generally account for 400/cr50% of its operating cost (Yang Qichang, 2008). Therefore, new energy-saving LED plants
Lamp research has always been a hot spot in plant tissue culture research. With the development of optoelectronic technology, it has driven the production of high-brightness LED red, blue and far red light-emitting diodes. Research has shown that LED plant growth lamps have convenient spectral energy modulation, low heat generation, long life, fixed wavelength, and low energy consumption. And other advantages, it has attractive development prospects for its application in agriculture and biology (201 1). In recent years, it has been used in grapes (Puspa et sweet, 2008), strawberries (Nhut et a1., 2003), bananas (Duong
et site. , 2003) and other aspects of tissue training have done a lot of research. Using LED plant lights in plant tissue culture to regulate light quality, light intensity and photoperiod, not only can regulate the morphology, growth and development of tissue culture plants.
Cultivating, shorten the number of days of cultivation, enhance quality, but also greatly reduce energy consumption and reduce production costs (Jordan et al.
a1. ,). Therefore, it is of great significance to thoroughly study the photobiological characteristics of the new light source, to study the mechanism of its influence on the morphology and physiology of tissue culture plants, and to develop special LED plant lights for plant tissue culture.
(201 1).
Relationship between light environment and plant growth, relationship between light environment and plant growth
Light environment is one of the important physical environmental factors that are indispensable for plant growth and development. The effects of spectral range on plant physiology are mainly manifested in:
a, 280-315NM: minimal impact on morphology and physiological processes
b. 315-400NM: The absorption of chlorophyll is very small, which affects the photoperiod effect and prevents the elongation of the stem
c. 400-520NM: the blue light part of chlorophyll has the largest absorption ratio in carotenoids, and has the greatest impact on photosynthesis
d, 520-610NM: the absorption rate of pigment is not high
e. 610-720NM: The peak value of this band should be at 660NM. The absorption of chlorophyll is low, which has a significant impact on photosynthesis and photoperiod effect.
f. 720-1000NM: Low absorption rate, stimulate cell elongation, affect flowering and seed toothing
g, 1000NM or more: converted to heat
Features of LED grow lights, characteristics of LED grow lights
1. The spectrum can be controlled
The LED spectrum of different colors can be accurately controlled within a range of values, which plays a great role in plant growth.
2. High light uniformity
In horticultural production, continuous and uniform artificial lighting is a prerequisite to ensure normal and stable production.
3. Length of sunshine
The flowering time of many plants has a great influence on the length of the harvest. We call this phenomenon of sensitivity to light called photoperiod.
4. Light intensity
Plant growth is affected by the total light absorption. In winter, insufficient natural light will often affect the growth of plant flowers and fruits
Is LED plant supplement light useful? Is LED plant supplement light useful
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