Explants are any part of a plant taken out and grown in a test tube, under sterile conditions in a special nutrient media.
The capacity to generate a whole plant from any cell/explants is called totipotency.
The nutrient medium must provide a carbon source such as sucrose and also inorganic salts, vitamins, amino acids and growth regulators like auxins, cytokinins, etc. By application of these methods, it is possible to achieve propagation of a large number of plants in very short durations.
Advantages of growing crops by tissue culture –
• It is a very fast technique.
• Very little space is needed for developing new plants.
• The crops grown by tissue culture are disease-free.
Rate this question :