Diatropism


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diatropism

[dī′a·trə‚piz·əm]
(botany)
Growth orientation of certain plant organs that is transverse to the line of action of a stimulus.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Diatropism

 

movements of plant organs during which they occupy a position perpendicular to the direction of the external forces acting on them. Diatropism is primarily typical of lateral plant organs with a dorsi-ventral structure, particularly of leaves that occupy a position on the main stem that is mostly perpendicular to the force of gravity operating on them or to the direction of light falling on them.

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