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An Electrical Analogue to Simulate the Oxygen Relations of Roots in Anaerobic Media
Author(s) -
ARMSTRONG W.,
WRIGHT E. J.
Publication year - 1976
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1976.tb02261.x
Subject(s) - sink (geography) , oxygen , radius , anaerobic exercise , constant (computer programming) , chemistry , computer science , biology , physiology , cartography , computer security , organic chemistry , programming language , geography
The paper describes the construction and the theory underlying a simple electrical analogue which may be used to simulate the internal oxygen relations of roots in the wetland condition. The model represents an unbranched root lying within an oxygen sink and consists of twenty circuit units linked in series. Each unit which can be programmed independently, represents the major oxygen diffusion paths, impedances and sinks recognizable in a centimetre‐long segment of root/wet soil system. Simplicity has been achieved by specifying constant radius for the root (0.05 cm), constant potential activity for the external sink, by expressing respiration and radial oxygen loss as a function of root surface area, and by the non‐inclusion of oxygen storage capacity.