The rooted plantlets (now called "plantlets") are removed from the culture vessel and potted in a sterile potting mix. They are gradually acclimatized to the lower humidity and ambient conditions of a greenhouse or growth chamber. This "hardening off" process is critical, as the delicate plantlets lack the protective waxy cuticle of mature plants and are highly susceptible to water loss.
An unorganized, proliferating mass of actively dividing parenchymatous cells. Explants are cultured on a medium rich in auxins (like 2,4-D). Callus cultures are excellent for studying morphogenesis and producing secondary metabolites. Organ Culture The isolation and growth of specific plant organs in vitro :
Plants grown in vitro often lack sufficient photosynthetic capacity. (at 2–3%) is most commonly added as an energy source. Organic Supplements plant tissue culture ppt pdf
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The discovery and application of plant growth regulators, particularly the balance between auxins and cytokinins, proved to be a major breakthrough. It was found that a high auxin-to-kinetin ratio promotes rooting, a high cytokinin-to-auxin ratio induces shoot formation, and intermediate levels favor the proliferation of undifferentiated callus. The rooted plantlets (now called "plantlets") are removed
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) to preserve biodiversity indefinitely without requiring expansive land plots. Organ Culture The isolation and growth of specific
: Hormones like auxins (for roots) and cytokinins (for shoots).
Unlike animal cells, which lose this ability early in development, almost all living plant cells retain the genetic blueprint and capacity to regenerate a whole organism given the right chemical and environmental triggers. 2. Key Terms and Definitions