Do root hydraulic properties change during the early vegetative stage of plant development in barley (Hordeum vulgare)?

ABSTRACT:

Background and aims

As annual crops develop, transpirational water loss increases substantially. This increase has to be matched by an increase in water uptake through the root system. The aim of this study was to assess the contributions of changes in intrinsic root hydraulic conductivity (Lp, water uptake per unit root surface area, driving force and time), driving force and root surface area to developmental increases in root water uptake.

Methods

Hydroponically grown barley plants were analysed during four windows of their vegetative stage of development, when they were 9-13, 14-18, 19-23 and 24-28 d old. Hydraulic conductivity was determined for individual roots (Lp) and for entire root systems (Lp(r)). Osmotic Lp of individual seminal and adventitious roots and osmotic

SUBMITTER: Suku S 

PROVIDER: S-EPMC3906963 | biostudies-literature | 2014 Feb

REPOSITORIES: biostudies-literature