Effects of hydric deficiency on gas exchange parameters and metabolism of Eucalyptus grandis clones

Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-27T11:26:15Z No. of bitstreams: 0Bitstream added on 2014-05-27T14:36:29Z : No. of bitstreams: 1 2-s2.0-84860715853.pdf: 104673 bytes, checksum: 83517ecf4d3b7957622030cbda8fa85e (MD5) Made available in DSpace on 2014-05-27T11:26:15Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-12-01 The metabolic effects caused by hydric deficiency (HD) on Eucalyptus grandis clones were assessed by an experiment where plants were cultivated in four blocks. The first was the control block, normally irrigated, whereas the other three blocks were submitted to cycles of hydric deficiency. Analysis of photosynthetic efficiency, enzymatic activity of antioxidant response system, level of pigments and L-proline concentration were performed to evaluate the HD effects. Results showed that HD altered some parameters related to photosynthetic activity, pigments accumulation, proline and enzymatic activity. Clone 433 of E. grandis presented higher response ability to HD. Department of Chemistry and Biochemistry Institute of Biosciences São Paulo State University (Unesp), 18618-000, Botucatu, São Paulo Laboratory of Plant Physiology and Biochemistry Department of Agronomy Federal Technological University of Paraná (UTFPR), 85503-390, Pato Branco, Paraná Departamento de Riego Centro de Edafología y Biología Aplicada del Segura (CSIC), P.O. Box 164, E-30100 Murcia Department of Chemistry and Biochemistry Institute of Biosciences São Paulo State University (Unesp), 18618-000, Botucatu, São Paulo