Eficiencia en el uso del agua por las plantas

Water availability is the most important limiting factor in plant and animal production under Mediterranean conditions. In a Global Climate Change scenario, this limitation will be even greater in the following years, according to the International Institutions predictions. In this sense, the effi ciency of water resources utilization should be a key point of public policies that must be discussed from different points of view. One of these is Plant Water Use Effi ciency (WUE). The objective of this paper is to review the different aspects related to WUE, considering the approach levels, from leaf to crop or ecosystem. The technical diffi culties to measure accurately WUE at crop or ecosystem level, the environment and agronomical practices importance in WUE determination, the