Question

Mention hormones that are used for promoting growth and cell division of plant cells in culture.

Hint:

Auxins and cytokinins are key hormones in plant tissue culture; auxins promote root and callus formation, cytokinins stimulate cell division and shoot development.

Answer 1

The plant hormones commonly used to promote growth and cell division in plant cell and tissue culture are:

• Auxins (e.g., Indole-3-acetic acid (IAA), Indole-3-butyric acid (IBA), Naphthalene acetic acid (NAA)): Promote cell elongation, root initiation, and callus formation.
• Cytokinins (e.g., Kinetin, Benzylaminopurine (BAP)): Stimulate cell division and shoot proliferation.
• The balance between auxins and cytokinins regulates differentiation and organogenesis in culture.