1. The conduction of soluble materials from one part of the plant to another. The process includes the movements of food substances in the phloem tubes, the transfer of growth substances from their point of production, and the upward flow of dissolved salts in the transpiration stream. Translocation of food materials is often preceded by enzyme action, which converts the substance concerned from an insoluble to a soluble form, as from starch to sugar. See also mass flow hypothesis , transpiration. 2. A chromosome mutation in which a chromosome segment has become detached and reattached to a different (nonhomologous) chromosome. The most commonly occurring translocations are known as reciprocal translocations or interchanges, which involve the mutual exchange of segments from nonhomologous chromosomes. See also deletion , duplication , inversion. |
