Plagiotropism


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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Plagiotropism

 

the growth of plant organs at some angle in the direction of a stimulus (for example, the force of gravity or a light source). Lateral shoots and roots, rhizomes, and leaves are plagiotropic. Plagiotropic organs usually are bilaterally symmetrical in structure. The angle of inclination is not absolutely constant in magnitude and may change, depending on the conditions under which the plant is growing. (See also ORTHOTRO-PISM.)

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.