You are in the accessibility menu

Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/69117
Title: 
Comportamento fisiológico e morfológico de clones de Eucalyptus urograndis submetidos a diferentes níveis de água no solo
Other Titles: 
Morphologycal and physiological behavior of clones from Eucalyptus urograndis submitted to different soil water levels
Author(s): 
Institution: 
Universidade Estadual Paulista (UNESP)
ISSN: 
1413-7895
Abstract: 
The present study had as its objective the assessment of the possible effects of hydric stress on the growth, physiological characteristics of two different genetic materials from Eucalyptus urograndis. The experiment was carried out in a greenhouse at Faculdade de Ciências Agronômicas of UNESP, campus Botucatu from March to July, 2005. The hydric management was established based on the soil water potential. Two water levels were established, doing the evapotranspired water replacement by pot weighing. Two clones were used, Eucalyptus urograndis 105 and 433, being the first one more resistant to the hydric deficit and the 433 more sensitive to stress. The study was made from a 2×2 factorial (two levels of water × two genetic materials). For the hydric management, the plants were irrigated when they reached a soil water potential of -0.03 MPa or -1.5 MPa. The assessments made were: diffusive water vapor of stomato, transpiration, leaf temperature and leaf water potential. The physiological evaluations throughout the day, in the end of the experiment. Treatments without hydric stress had a higher performance in all studied characteristics, but the clones had no influence. The stomatic resistance followed the potentials, showing higher values in the treatments submitted to hydric deficiency, more intensely for clone 433, being that this also happened with the leaf water potential. The transpiration also followed the leaf water potential and the stomatic resistance more intensely for clone 105 both comparing stressed plants and non-stressed plants. Consequently, the leaf temperatures had higher values for clone 433 on the stressed treatment. Thus, it can be concluded that there was a better performance in plants kept on a soil water potential of -0.03 MPa and a higher resistance to hydric stress for clone 105.
Issue Date: 
1-Oct-2006
Citation: 
Irriga, v. 11, n. 4, p. 518-531, 2006.
Time Duration: 
518-531
Keywords: 
  • Eucalyptus
  • Hydric stress
  • Irrigation
  • Evapotranspiration
  • Morphology
  • Plants (botany)
  • Soils
  • Water levels
  • clone
  • evergreen tree
  • irrigation
  • soil water potential
  • transpiration
  • Eucalyptus urograndis
Source: 
http://200.145.140.50/ojs1/viewarticle.php?id=82&layout=abstract
URI: 
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/69117
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

There are no files associated with this item.
 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.