1. Ahmad, S., Ahmad, R., Ashraf, M.Y., Ashraf, M., Waraich, E.A. 2009. Sunflower (Helianthus annuus L.) response to drought stress at germination and growth stages. Pakistan Journal of Botany, 41: 647-654.
2. Álvarez-Iglesias, L., de la Roza-Delgado, B., Reigosa, M.J., Revilla, P., Pedrol, N. 2017. A simple, fast and accurate screening method to estimate maize (Zea mays L.) tolerance to drought at early stages. Maydica, 62: 3-24.
3. Avramova. V., Abd Elgawad, H., Zhang, Z., Fotschki, B., Casadevall, R., Vergauwen, L., Knapen, D., Taleisnik, E., Guisez, Y., Asard, H., Beemster, G.T.S. 2015. Drought Induces Distinct Growth Response, Protection and Recovery Mechanisms in the Maize Leaf Growth Zone. Plant Phyiology, 169: 1382-1396.
4. Ayalew, H., Ma, X., Yan, G. 2014. Screening Wheat (Triticum spp.) Genotypes for Root Length under Contrasting Water Regmies: Potential Sources of Variability for Drought Resistance Breeding. Journal of Agronomy and Crop Science, 201(3): 189-194.
5. Blum, A. 2011. Drought resistance – is it really a complex trait?. Functional Plant Biology, 38: 753-757.