Plant tissue culture is a technique used to grow new plants from a small piece of plant tissue under sterile conditions in a nutrient medium. The process involves:
1. Selection of an explant (a small tissue from a plant).
2. Sterilization to prevent microbial contamination.
3. Placement in a nutrient-rich culture medium containing growth hormones.
4. Formation of callus (undifferentiated cells).
5. Differentiation into roots and shoots.
6. Transfer to soil for further growth.