It has been researched the response of some quantitative traits at the early ontogeny stage of the wheat genotypes M79/M5 (aristate), M79/M5 (non-aristate) and Mirg./Od.162/M79 under conditions of water restriction adjusted with polyethylene glycol (PEG 6000) in concentrations of 10% and 16% at temperatures of 22oC and 12oC. Variance analysis revealed PEG desiccation with major weight in the phenotypic variance of Germination and Stem/Root ratio (80.2% and 74.3%). The temperature was accounted for 85.2%, 88.8% and 88.0% of the variance of Root, Stem and Whole Plant. Both stressors produced 38.5% and 57.0% in phenotyping the Integral Plant Index. The high values both for Heritability coefficient in broad sense, but also for Genetic advance over the mean predict an advantage in the improvement of wheat during drought.