Annals of Botany

Hydraulic conductivity of roots

Radial and axial hydraulic conductivities are key parameters for understanding and modelling root water uptake. Despite their importance, there is limited experimental information relating to how the radial and axial hydraulic conductivities vary along roots growing in soil.

Radial fluxes (m s–1) (left) and (minus) absolute xylem water potential (MPa) (right) along a 3-week-old root system of lupine simulated in scenario 2.
Radial fluxes (m s–1) (left) and (minus) absolute xylem water potential (MPa) (right) along a 3-week-old root system of lupine simulated in scenario 2. The root system is extracted from the neutron radiographs of Zarebanadkouki et al. (2013).

Zarebanadkouki et al. adopt a new approach to estimating the profiles of hydraulic conductivities using a three-dimensional model of root water uptake and a neutron radiography technique applied to the roots of transpiring lupine plants grown in soil.

Root Biology Issue This paper is part of the Root Biology Special Issue.

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