Divergent selection for osmotic adjustment results in improved drought tolerance in maize (Zea mays L.) in both early growth and flowering phases

By C. Chimenti, Matías Marcantonio, A. Hall. 2006

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Effective use of water (EUW) and not water-use efficiency (WUE) is the target of crop yield improvement under drought stress (2009, background): “…stress: (a) it enables leaf turgor maintenance for the same leaf water potential thus supporting stomatal conductance under lower leaf water status (e.g. Ali et al., 1999; Sellin, 2001), and (b) it improves root capacity for water uptake (e.g. Chimenti et al., 2006; Tangpremsri et al., 1991).”
Chilling and Drought Stresses in Crop Plants: Implications, Cross Talk, and Potential Management Opportunities (2018, background): “Greater accumulation of osmolytes is generally linked with drought tolerance (Blum, 2005) because these facilitate in maintenance of leaf turgor to improve conductance of stomata for efficient CO2 intake (Kiani et al., 2007), and promote the water uptake ability of roots (Chimenti et al., 2006).”
Global status of commercialized biotech/GM crops: 2006. (2006, background): “W may also be increased by the capacity of the plant to adjust osmotically and therefore “suck” more water from the soil (Chimenti et al., 2006), though this is not considered an important mechanism in tropical maize.”