The capacity of a cell/explant to grow into a whole plant is called totipotency.
Requirements:
(i) Explant: Any part of a plant taken out and grown in a test tube.
(ii) Nutrient medium: It must have carbon source (sucrose), inorganic salts, growth regulators (auxins, cytokinins, etc.), vitamins and amino acids.
(iii) Suitable light and temperature conditions.
