Poplar
2017, no. 199-200, p. 194-207

Original scientific paper
UDK/DOI: 582.632.2:551.5

The Effect of Drought Stress and Recovery on Pedunculate Oak Populations Grown in Semi-Controlled Conditions



Marina Bojović 1, Nataša Nikolić 2, Milan Borišev 2, Slobodanka Pajević 2, Rita Horák 3, Lazar Pavlović 4,  Erna Vaštag 4


1 University Educons, Faculty of Environment Protection
2 University of Novi Sad, Faculty of Science
3 University of Novi Sad, Hungarian Language Teacher Training Faculty
4 University of Novi Sad, Faculty of Agriculture

e-mail: mimatopic@gmail.com

Abstract

Two pedunculate oak (Quercus robur L.) populations were grown in a semi-controlled conditions and were subjected to different tratments: optimal soil moisture (control), drought followed by recovery of optimal soil moisture (S1) and permanent drought treatment (S2).Variation in leaf gas exchange parameters such as photosynthesis (A) and transpiration intensity (E), stomatal conductance (gs), instantaneous water use efficiency (WUE) as well as intrinsic water use efficiency (WUEi) were investigated among populations in their response to water deficit and recovery from drought. The results of the study indicate specific adaptive predispositions of examined populations in relation to drought stress and recovery, which provides reliable guidance for assessing their potential for cultivation under water deficiency conditions and the possibility of recovery after re-establishing optimum water supply.



Keywords: Quercus robur, drought, recovery, leaf gas exchange parameters