Background Water use efficiency (WUE) is an important adaptive trait for soil water deficit. The molecular and physiological bases of WUE regulation in crops have been studied in detail in the context of plant breeding. Knowledge for most forest tree species lags behind, despite the need to identify populations or genotypes able to cope with the longer, more intense drought periods likely to result from climate warming.

中文翻译：

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无柄橡树（Quercus Petraea (Matt.) Liebl.）高和低水分利用效率基因型对土壤水分亏缺的分子可塑性不同

背景水分利用效率（WUE）是土壤水分亏缺的重要适应性特征。已经在植物育种的背景下详细研究了作物 WUE 调控的分子和生理基础。尽管需要确定能够应对气候变暖可能导致的更长、更严重的干旱期的种群或基因型，但对大多数森林树种的了解仍然滞后。