Once these plants are in the research fields, they are evaluated under field conditions and the data is collected every 6 months. A large number of tissue culture plants that have grown into trees are remarkably uniform and show an increase in biomass production over the conventionally raised plants. Micropropagation Rapid vegetative multiplication of valuable plant material for agriculture, horticulture, and forestry. Production of disease-free plants When the apex of shoot is used for multiplication by tissue culture, we get disease free plants because the shoot apical meristem, a group of dividing cells at the tip of a stem or root, is free from pathogens. Plant breeding Tissue culture has also been successfully used in plant breeding programmes.
Plants grown from tissue culture usually pass trough callus phase and show many variations.
These show some agronomic characteristics like tolerance to pests, diseases, etc. Cloning Genetically identical plants derived from an individual are called clones. Processes that produce clones can be put under the term 'cloning'. This includes all the methods of vegetative propagation such as cutting, layering, and grafting. Propagation by tissue culture also helps in producing clones.