“…Roots exhibit morphological plasticity in response to soil physical conditions (Bengough et al, 2006;Forde, 2009;Tuberosa, 2012), a uniqueness that allows plants to adapt better to the chemical and physical properties of the soil, particularly under drought conditions (Bacon et al, 2002;Yu et al, 2007). Specific root traits associated with maintaining plant productivity under drought conditions include increases in numbers of roots with smaller diameters and a deeper root system (Blum, 1988(Blum, , 2011Addington et al, 2006;Pemán et al, 2006;Chirino et al, 2008;Comas et al, 2013). A correlation between a deep and prolific root system with drought resistance has been established in several crops including soybeans (Sadok and Sinclair, 2011), chickpea (Cicer arietinum L.) (Varshney et al, 2011), maize (Tuberosa et al, 2003(Tuberosa et al, , 2011Landi et al, 2010;Hund et al, 2011), and wheat (Triticum aestivum L.) (Wasson et al, 2012).…”