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Flag leaf contributes greatly to grain filling in cereal crops, and its enhanced assimilate partitioning ability may be helpful in achieving greater grain yield. Calcium (Ca) is an essential element and has structural and functional roles in number of plant phenomena. Studies showed the beneficial effects of exogenously applied Ca in improving plant physiological performance but field studies on seed priming at sowing and foliar application of Ca are lacking. In this two-locational plot study, unprimed, water-primed and Ca-primed (overnight in -1.25 MPa solution of CaCl₂.2H₂O) wheat (Triticum aestivum L. cv. Punjab-11) seeds were sown in the field plots and foliar sprayed at grain filling (GF) stage. The flag leaf growth, gas exchange, pigment and nutrient data were obtained of the fully expanded leaf 20 days after foliar spray. Grain pigment composition was determined at 20 days after foliar spray treatments. Yield …