Abstract
In the Amazon rainforest, the acaizeiro (Euterpe oleracea, Mart.) Stands out as being the most used palm of this estuary, both in fruits and in genera derived from the plant. The fruit, raw material to obtain the juice of acai, symbolic drink of the state of Para, is the main product coming from the palm tree. Brazil is the largest producer, consumer and exporter of this product. The experiment was carried out in a greenhouse belonging to Embrapa Amazonia Oriental, from September to November 2015. The water deficit for sixteen days resulted in considerable changes in the maintenance of turgescence and plant growth. The study revealed that the 16-day water deficit in acaizeiro plants promoted an increase in the concentrations of sucrose, total soluble carbohydrates, proline and glycine-betaine, these osmoregulators that maintained the water status in the leaves of the plants. Keywords: Amazon; acai; water stress; osmoregulation.
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