Plant Tissue Culture

Plant tissue culture, also known as micropropagation or in vitro culture, is a technique used to propagate and manipulate plants at the cellular level under sterile laboratory conditions. It involves the growth of plant cells, tissues, or organs in an artificial nutrient medium supplemented with hormones and nutrients. Plant tissue culture has various applications in agriculture, horticulture, forestry, conservation, and biotechnology.

Techniques and Processes :

Explants Selection:

  • The process begins with selecting suitable plant parts, known as explants, which can include meristematic tissues, shoot tips, leaves, embryos, or even single cells, depending on the desired outcome.

Surface Sterilization:

  • Explants are surface sterilized to remove any microbial contaminants using disinfectants such as bleach or alcohol, followed by rinsing with sterile water.

Culture Initiation:

  • Sterilized explants are placed onto a sterile nutrient medium containing a mix of sugars, vitamins, minerals, and growth regulators, such as auxins and cytokinins, which stimulate cell division and differentiation.

Callus Formation:

  • Under suitable conditions, explants may form a mass of undifferentiated cells called callus, which can be subcultured onto fresh medium to induce organogenesis or embryogenesis.

Shoot and Root Induction:

  • Manipulation of hormonal concentrations in the medium can promote shoot or root formation from the callus tissue, leading to the development of complete plantlets.


  • Once roots and shoots are formed, the plantlets are transferred to soil or a soilless medium in a greenhouse or growth chamber to acclimatize to ambient conditions before being transferred to the field.

Advantages of Plant Tissue Culture :

Rapid Clonal Propagation:

  • Tissue culture enables the production of large numbers of genetically identical plantlets within a short period, bypassing the lengthy process of conventional propagation methods.

Year-Round Propagation:

  • Plant tissue culture allows for propagation independent of seasonality, providing a continuous supply of plants throughout the year.

Disease-Free Plantlets:

  • In vitro propagation reduces the risk of transmitting diseases and pathogens compared to conventional propagation methods, resulting in healthier plants.

Genetic Manipulation:

  • Tissue culture offers precise control over the genetic makeup of plants, facilitating genetic transformation, mutation induction, and hybridization techniques.

Plant tissue culture is a powerful tool for the propagation, manipulation, and genetic improvement of plants, offering numerous applications in agriculture, horticulture, forestry, and biotechnology. Despite its challenges, tissue culture continues to revolutionize plant breeding, conservation, and bioproduction, contributing to the advancement of crop productivity, genetic diversity conservation, and the development of novel plant-based products. Continued research and technological advancements in tissue culture techniques hold promise for addressing global challenges in food security, biodiversity conservation, and sustainable agriculture.





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