Plant and Soil

, Volume 380, Issue 1–2, pp 211–229 | Cite as

Wheat root diversity and root functional characterization

  • Alireza Nakhforoosh
  • Heinrich Grausgruber
  • Hans-Peter Kaul
  • Gernot Bodner
Regular Article

Abstract

Background and Aims

Under limited moisture conditions, roots can play an outstanding role with respect to yield stability by effective absorption of water from soil. A targeted integration of root traits into plant breeding programs requires knowledge on the existing root diversity and access to easy and cost-effective methods. This study aimed to assess wheat root diversity, root properties in relation to water regime, and the efficiency of root capacitance for in situ screening.

Methods

Root morphological, anatomical properties and root capacitance of wheat species from different ploidy levels were studied under field conditions in 2 years contrasting in water regime. Soil water content was weekly measured.

Results

Significant genotypic differences were observed for most root traits. The investigated genotypes exploited different strategies to maximize soil water depletion, e.g. high topsoil root length density, low tissue mass density, high specific root length, deep rooting and looser xylem vessels. Multivariate statistics of root traits revealed an acceptable genotypic differentiation according to regional origin, genetics and capacity to extract soil water.

Conclusions

Under supply-driven environments, dehydration avoidance via water uptake maximization can be achieved through high topsoil rooting density. In this regard, root capacitance can be useful for in situ screening.

Keywords

Drought Electrical capacitance Spring wheat Triticum spp Water stress 

Abbreviations

β

Rooting distribution

RC

Root electrical capacitance

RD

Root diameter

RLD

Root length density

R:S

Root to shoot ratio

SRL

Specific root length

TMD

Tissue mass density

Notes

Acknowledgments

We thank Dr. Elsa Arcalis (IAGZ, BOKU) for her assistance in root anatomical measurements. Original seeds of plant genetic resources were provided by the genebank curators H.E. Bockelman (NSGC, USDA-ARS), A. Graner (IPK, Gatersleben), T. Payne (CIMMYT), J. Lafferty (SZD, Probstdorf), and by G. Ghambashidze (GSAU, Tbilisi). We also thank the reviewers for constructive comments to improve the manuscript.

Supplementary material

11104_2014_2082_MOESM1_ESM.pdf (417 kb)
ESM 1 (PDF 416 kb)

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Alireza Nakhforoosh
    • 1
  • Heinrich Grausgruber
    • 1
  • Hans-Peter Kaul
    • 1
  • Gernot Bodner
    • 1
  1. 1.Department of Crop SciencesBOKU-University of Natural Resources and Life Sciences, ViennaTullnAustria

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