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Effects of Mechanical Impedance on Root Growth in Barley, Hordeum vulgare L.II. EFFECTS ON CELL DEVELOPMENT IN SEMINAL ROOTS

Effects of Mechanical Impedance on Root Growth in Barley, Hordeum vulgare L.II. EFFECTS ON CELL... Abstract Anatomical changes induced in the roots of barley plants (Hordeum vulgare cv. Proctor) by an applied pressure of 2 × 104 Pa (0.2 bar) have been examined; previous studies had shown that the length of roots grown under these conditions was about 50% of that of unimpeded roots. Cryomicrotomy/light microscopy and scanning electron microscopy were used. Mechanical impedance increased the diameter of roots, this being due largely to an increased thickness of the cortex; the number of cells in transverse section was increased and the diameter of the outer cells was greater though that of the inner ones was reduced. This content is only available as a PDF. © Oxford University Press http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Experimental Botany Oxford University Press

Effects of Mechanical Impedance on Root Growth in Barley, Hordeum vulgare L.II. EFFECTS ON CELL DEVELOPMENT IN SEMINAL ROOTS

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Publisher
Oxford University Press
Copyright
© Oxford University Press
ISSN
0022-0957
eISSN
1460-2431
DOI
10.1093/jxb/28.5.1216
Publisher site
See Article on Publisher Site

Abstract

Abstract Anatomical changes induced in the roots of barley plants (Hordeum vulgare cv. Proctor) by an applied pressure of 2 × 104 Pa (0.2 bar) have been examined; previous studies had shown that the length of roots grown under these conditions was about 50% of that of unimpeded roots. Cryomicrotomy/light microscopy and scanning electron microscopy were used. Mechanical impedance increased the diameter of roots, this being due largely to an increased thickness of the cortex; the number of cells in transverse section was increased and the diameter of the outer cells was greater though that of the inner ones was reduced. This content is only available as a PDF. © Oxford University Press

Journal

Journal of Experimental Botany – Oxford University Press

Published: Oct 1, 1977

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