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Type: Artigo de periódico
Title: Ecophysiological Behavior Of Eucalyptus Grandis X Eucalyptus Urophylla, Igaratá, Sp - Brazil [comportamento Ecofisiológico Do Clone Eucalyptus Urophylla, Igaratá, Sp - Brasil]
Author: Tonello K.C.
Teixeira Filho J.
Abstract: This study aimed to characterize the effects of environmental variables on the transpiration (E), stomatal conductance (Gs) and photosynthesis (A) behavior of Eucalyptus grandis x Eucalyptus urophylla clone in the leaf scale over three consecutive days. The measurements were performed in a clonal population of 60 months of age, located in the municipality of Igaratá-SP. Measurements of predawn leaf water potential (Ψpd) by the Scholander pressure chamber and ecophysiological measurements of E, Gs and A were obtained by porometer LcPro + (ADC). Specific climate characteristics to the measurement days were obtained from the automatic weather station Campbell Scientific Inc. installed on the site of study, distant 100 m from the clonal settlement of interest. Environmental variables such as photosynthetically active radiation (Qleaf) and a pressure deficit of water vapor (VPD) were chosen to correlate with E, Gs and A. The best associations were observed between E, G, A with Qleaf not being significant for Gs and VPD. The ratio A / E was progressively increased with the decrease of Ψpd. Knowledge of water use efficiency helps to select the best species of Eucalyptus to determine certain conditions.
Rights: aberto
Identifier DOI: 
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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