There are two main types of lighting systems commonly used in plant tissue culture room: top light system and side light system.
The way of vertical irradiation of top light is convenient for daily operation and management, but with the growth of plant height and the increase of crown width, a large amount of light is intercepted by the high plant halfway, and only a small amount of light can be absorbed and utilized by the lower leaves of the plant, resulting in some plant species can not grow and develop well.
The light energy efficiency of the side lighting system can greatly improve the light use efficiency, and the light energy utilization efficiency of the side lighting system is 3-5 times that of the vertical lighting system. The internodes of the plants in the side light system are shorter than those in the top light system, the plants are not long, and the number of leaves of the plants is larger, and the plant growth is better.
In addition, the lighting system used for plant tissue culture also needs to pay attention to the choice of light source. It is generally believed that the light in the wavelength range of 280-800 nm in sunlight is the light that can be absorbed and utilized by plants, and the blue light band (400-500 nm) and red light band (600-700 nm) play a major role. Therefore, when choosing a light source, you should choose a device that can provide the appropriate ratio of blue and red light to meet the needs of plant growth. At the same time, in order to ensure the stability and uniformity of illumination, it is usually necessary to use light source equipment with stable power and good heat dissipation performance, and take measures to reduce the aging and failure of light sources.
My New Year's Reading Plan In general, the lighting system of the plant tissue culture room needs to choose the appropriate light source and irradiation method according to the actual needs, and pay attention to the maintenance and maintenance of the light source equipment to ensure the smooth progress of the experiment and the credibility of the experimental results.