Studying root water uptake of wheat genotypes in different soils using water δ18O stable isotopes

•δ18O in water was used to trace depth of water uptake among wheat genotypes.•Depth of water uptake of wheat genotypes varied and depended on soil type.•Soil type and nutrient distribution modify root traits and water uptake.•Depth of root water uptake at vegetative stage explains variation in grain...

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