They were studied some morphological and physiological characteristics or Annona diversifolia Saff. in relation to soil moisture availability conditions. Soil moisture level affected leaf area and dry matter distribution. Leaf water potential decreased as soil water potential did, with values of -1.26, -1.51, 1.73, 1.76 and 2.36 MPa, for the control, drought 1, drought 2, drought 3 and non-irrigated treatment, respectively. The rate of gas exchange also decreased significantly at the three levels of soil moisture. Proline concentration was negatively correlated to osmotic potential; however, regression analysis did not show any defined tendency. Ten days after the recuperation irrigation, the rate of gas exchange recovered almost entirely for moderate stress treatments.

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