Maples, like many other plants, can be cultivated and propagated under
controlled, aseptic conditions in test tubes or Erlenmeyer flasks (so called
in vitro conditions).
There are several types of maple cultures, as protoplast, cell, tissue,
and organ cultures, however, up to date organ cultures have proved the
best choice to achieve in vitro maple propagation through organogenesis.
Of course, considerable efforts are also devoted to an alternative developmental
pathway, somatic embryogenesis, when somatic cell(e.g. callus cell) assumes
a zygotic embryo function and develops into an entire plantlet.
The maple regeneration cycle via organogenesis passes through four main
stages: culture establishment from a primary explant; shoot elongation
and multiplication; rooting of excised shoots; and transfer of regenerated
plantlets into the field.
Up to date only very few maple species are propagated this way.