Tolerance to ion toxicities enhances wheat grain yield in acid soils prone to drought and transient waterlogging

Hossein Khabaz-Saberi, Susan Barker, Zed Rengel

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)


    © 2014 CSIRO. The ion toxicities of aluminium (Al), manganese (Mn) and iron (Fe) induced in transiently waterlogged acid soils decrease root and shoot growth and grain yield more in intolerant than tolerant wheat genotypes. Whether these tolerances might also enhance grain yield in moisture-limited acid soils is not known. Wheat genotypes contrasting in ion toxicity tolerances (differing 6-fold for Al, 14-fold for Mn and 2.7-fold for Fe tolerance, quantified via relative root length (Al) or relative root dry weight (Mn and Fe)), but otherwise having a similar yield potential and maturity, were evaluated in plots with and without lime in multi-location field experiments (including two dry and one non-moisture-limiting site) in the Western Australian wheatbelt. Liming reduced surface soil acidity, and increased grain yield more in ion-toxicity tolerant than intolerant genotypes. The combined adverse effect of soil acidity and drought reduced relative grain yield less in Al-and Mn-tolerant genotypes (68%, 2347kgha-1) than intolerant genotypes (76%, 2861kgha-1) in drought-stressed environments. It appears that a deep root system to allow uptake of water from deep horizons in acidic soils with a dry surface layer is contingent on tolerance to multiple ion toxicities.
    Original languageEnglish
    Pages (from-to)862-867
    JournalCrop and Pasture Science
    Issue number9
    Publication statusPublished - 2014


    Dive into the research topics of 'Tolerance to ion toxicities enhances wheat grain yield in acid soils prone to drought and transient waterlogging'. Together they form a unique fingerprint.

    Cite this