How are clones produced from individual cells in tissue culture?

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In tissue culture, clones are produced by initiating a culture from a single cell, which results in the development of a uniform biological population.1

To begin this process, a small sample of tissue is dispersed into a culture medium that provides the necessary nutrients, such as inorganic elements, sugar, and vitamins, often supplemented with growth regulators. The culture is then incubated under sterile conditions to prevent contamination. When the culture is started from a single cell, that cell undergoes successive rounds of cell division, typically forming a visible colony within 10 to 14 days. Because these colonies originate from a single parent cell, the resulting population is genetically identical, forming a clone.213

In plant tissue culture specifically, techniques involving embryos, shoot tips, or callus tissue can also be used to multiply plants. For instance, cultured shoot tips can form embryo-like stages that are sectioned to build up large stocks, or they may develop directly into small plantlets.2