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Nádia Figueiredo de Paula ; Rinaldo Cesar de Paula ;Revista Ciência Agronômica 2014, 45 4

Author: Jane Valadares

Source: http://www.redalyc.org/


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Revista Ciência Agronômica ISSN: 0045-6888 ccarev@ufc.br Universidade Federal do Ceará Brasil Valadares, Jane; Figueiredo de Paula, Nádia; de Paula, Rinaldo Cesar Physiological changes in eucalyptus hybrids under different irrigation regimes Revista Ciência Agronômica, vol.
45, núm.
4, octubre-diciembre, 2014, pp.
805-814 Universidade Federal do Ceará Ceará, Brasil Available in: http:--www.redalyc.org-articulo.oa?id=195331351019 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative Revista Ciência Agronômica, v.
45, n.
4, p.
805-814, out-dez, 2014 Centro de Ciências Agrárias - Universidade Federal do Ceará, Fortaleza, CE www.ccarevista.ufc.br Artigo Científico ISSN 1806-6690 Physiological changes in eucalyptus hybrids under different irrigation regimes1 Alterações fisiológicas em híbridos de eucalipto sob diferentes regimes de irrigação Jane Valadares2, Nádia Figueiredo de Paula3 e Rinaldo Cesar de Paula4* ABSTRACT - With the expansion of the cultivation of eucalyptus into areas with limited water resources, recommending genotypes which are tolerant to low water availability is important in order to maximize productivity under such conditions.
The aim of this work therefore was to evaluate five hybrids of Eucalyptus grandis x E.
urophylla (H1 to H5) subjected to four irrigation regimes in the greenhouse: daily (IR1), every two days (IR2), every four days (IR4) and every six days (IR6).
The following characteristics were evaluated: photosynthetic rate (A), transpiration (E), stomatal conductance (g s), leaf water potential ( w), leaf relative water content, photochemical efficiency and chlorophyll content index.
Evaluations of A, g s and E were carried out on two occasions: 1 - under stress, at the end of the i...





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