Water use efficiency: Behavior of upland rice lines under water deficit

Upland rice (Oryza sativa) is affected by several biotic and abiotic factors that limit the yield potential of cultivars. In relation to water deficiency, development drought tolerant efficient cultivars a priority in breeding programs. With this study aimed evaluate agronomic behavior upland lines subjected different irrigations depths aiming for selection genotypes are responsive deficiency. Thirty-four recombinant inbreeded were evaluated an experiment using supplementary sprinkling dry test without additional irrigation during 2015/2016 season. The characteristics grain yield, use efficiency, days flowering, plant height, occurrence panicle blast, spikelets number per spikelet sterility. It was concluded there behaviors level submitted being possible deficit. Drought tolerance complex trait involves features development, good feature be used experts select genotypes, with view Key words:  Oryza sativa, depths, tolerance, inbreed lines.