Ahmad, I. et al. 2017. Improvement of antioxidant activities and yield of spring maize through seed priming and foliar application of plant growth regulators under heat stress conditions. Semina: Ciências Agrárias. 38, 1 (Mar. 2017), 47–56. DOI:https://doi.org/10.5433/1679-0359.2017v38n1p47.