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In cerrado regions, during the rainy season, the occurrence of drought periods that compromise essential functions related to the production of upland rice is very common. In order to explore drought tolerant materials, this study aimed to evaluate the productive aspects of upland rice lines under water stress conditions. The experiment was conducted in two years (2007 and 2008) in the experimental research station of Universidade Federal do Tocantins, Gurupi, Tocantins, Brazil, evaluating 20 upland rice strains, consisting of two parents (Puteca and Chorinho) and 18 F7 strains selected from 186 materials obtained from crossings between the parents. The spikelets sterility, one hundred grains weight, yield and drought susceptibility index (DSI), were evaluated. The Chorinho, CNA 102, CNA 121, CNA 161, CNA 179, CNA 212 and CNA 236 materials were superior in comparison to the other ones, with lower DSI values and higher yields in water stress conditions. From the selection of these lines, genes (or groups of genes) determining this drought tolerance may be found, aiming at the future release of commercial cultivars. [ABSTRACT FROM AUTHOR]