Tissue culture is already prevalent among scientists globally. It is the unique process by which they can grow the entire plant just from specific cells of it. This helps them make disease-resistant varieties of plants. To continue with the cultural techniques, you need a nursery or a greenhouse and trained people. The technique is quite costly; therefore, economically important plants are preferred to be developed by this process.
The technique involves complete control over the temperature, pH, and other necessary conditions for the growth of the tissue. It needs the training to perform the culture.
Preparing a medium is a critical process for the culture to happen. If the culture medium is not appropriate, the process will not proceed. The medium has inorganic elements, organic compounds, and a support matrix.
Agar, a polysaccharide, is used in making culture mediums. They do not react with the media constituents and are not digestible by plants.
The culture medium varies upon the species under observation. The medium should be of optimum pH to support the process.
Tissue culture is a very delicate process. Therefore, special care is necessary for the process to occur. Persons with special skills can only perform this technique.
The basic steps of tissue culture are as follows:
Several precautions are necessary during the transfer of explant to the culture medium. During the transfer, dust particles can cause a hurdle in the proper culturing. Therefore, the sterilisation of equipment is necessary before using it. The inoculation chamber, where the explant is kept, is also sterilised. Sterilisation of headgear and clothes is necessary to prevent the entry of any unwanted particle in the medium.
Clean your hands and transfer area with 95% alcohol. Avoid any talking in the chamber during the process. The instruments should be flamed before use. The explants should not touch the edges of the culture vessel. Close the vessel with a plug once the explant is carefully kept in the vessel.
After successful vaccination, the incubation of the explant is the next step. The incubation can be through the incubation chambers. Different cultures require varying temperature ranges for incubation. However, the average temperature may be slightly below or above 25 °C.
The explant requires alternate periods of light and darkness. Some of them may require more light than others. The light source is kept 18 inches above the culture racks. Proper humidity is also necessary for the growth of the explant. However, low humidity can cause desiccation of it. The explant under culture must receive proper air to survive. Shakers are present in incubation chambers to ensure this.
The culture is carefully examined and observed. The explant is transferred to a new fresh culture medium with proper care. During the transfer, the same precautions are necessary. By delaying this transfer, the tissue may not grow properly.
Now, the final step arrives, a plantation of the plant. The plant is transferred to the pot. It is a critical phase for the plant as it becomes habitual with the real environmental condition. Therefore, special care of a plant is necessary until it adapts to the environment.
The tissue culture has immense importance in developing different and better crops. Some of their significance are as follows:
Tissue culture is a very important practice in the modern world. It provides an opportunity of developing better plant varieties with high yields. Certain special traits are added or subtracted as per the requirement. The process is very delicate and requires specialists to perform. Sterilisation of every piece of equipment is necessary before starting the process.
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