Journal Article

The Use of Agar Nutrient Solution to Simulate Lack of Convection in Waterlogged Soils

AMARA WIENGWEERA, HANK GREENWAY and CAMPBELL J. THOMSON

in Annals of Botany

Published on behalf of The Annals of Botany Company

Volume 80, issue 2, pages 115-123
Published in print August 1997 | ISSN: 0305-7364
Published online August 1997 | e-ISSN: 1095-8290 | DOI: https://dx.doi.org/10.1006/anbo.1996.0405
The Use of Agar Nutrient Solution to Simulate Lack of Convection in Waterlogged Soils

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Agar at 0.1% in nutrient solution (‘stagnant solution’) was used to prevent turbulence (convection), thus simulating the slow gas movements which occur in waterlogged soils. Wheat, aged between 6 and 16 d at the start of the treatment, was used to test plant growth and development in this stagnant solution for 8–15 d. K-MES buffer at 5 mol m−3was used to retain the pH of the rhizosphere in the stagnant solution at pH 6.5.

The prevention of convection reduced dissolved oxygen concentrations in the bulk solution from 0.275 to below 0.05 mol m−3after 1 d, while ethylene...

Keywords: Triticum aestivum; wheat; waterlogging; lack of convection; aerenchyma; root development; nutrient uptake

Journal Article.  0 words. 

Subjects: Ecology and Conservation ; Evolutionary Biology ; Plant Sciences and Forestry

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