GROWTH, WATER RELATIONS AND LEAF GAS EXCHANGE OF PLANTS OF ILAMA (<em>Annona diversifolia</em> Saff.) UNDER WATER STRESS CONDITIONS.

Otero-Sánchez, M. A.; Ruiz-Posadas, Lucero del Mar; Becerril-Román, A.E.; Tijerina-Chávez, L.; Engleman, E.M.; Castillo-Morales, Alberto

doi:10.5154/r.rchsh.2003.04.030

ISSN e: 2007-4018 / ISSN print: 2007-4018

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Vol. 11, issue 1 January - June 2005

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GROWTH, WATER RELATIONS AND LEAF GAS EXCHANGE OF PLANTS OF ILAMA (Annona diversifolia Saff.) UNDER WATER STRESS CONDITIONS.

CRECIMIENTO, RELACIONES HÍDRICAS E INTERCAMBIO GASEOSO DE PLANTAS JÓVENES DE ILAMA (Annona diversifolia Saff.) EN CONDICIONES DE ESTRÉS HÍDRICO

M. A. Otero-Sánchez; Lucero del Mar Ruiz-Posadas; A.E. Becerril-Román; L. Tijerina-Chávez; E.M. Engleman; Alberto Castillo-Morales

Keywords: Leaf water potential, proline, leaf conductance, transpiration, CO2 assimilation.

10.5154/r.rchsh.2003.04.030

Received: 2003-04-11
Accepted: 2004-07-27
Available online: 2016-07-01
Pages:59-65

Abstract Highlights

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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