Resposta fisiológica de plantas de mamoeiro submetidas ao déficit hídrico

Abstract

In Brazil, especially in the North, the papaya tree has traditionally been grown in conditions of rainfed agriculture, subject to high risks caused by climate variations. With the objective of evaluate the effect of water stress on leaf relative water content relative water content in leaves and sucrose contents, carbohydrates, proline and glycine-betaine in leaves and roots of papaya tree (Carica papaya L), an experiment was conducted in a greenhouse in a randomized experimental design, with two treatments [irrigated (control) and water deficit], with 28 experimental units, in which each unit was composed of a plant / pot. The effects of water deficit in papaya plants was the reduction of water content in leaves and increased levels of sucrose, total soluble carbohydrates, proline and glycine-betaine in the roots and leaves.