Gas exchanges of 'Tommy Atkins' mango trees under different irrigation treatments

  • Marcelo Rocha dos Santos Instituto Federal de Educação, Ciência e Tecnologia Baiano Campus Guanambi
  • Mauro Aparecido Martinez Universidade Federal de Viçosa
  • Sérgio Luiz Rodrigues Donato Instituto Federal de Educação, Ciência e Tecnologia Baiano Campus Guanambi
Keywords: Regulated deficit irrigation, Plant physiological ecology, Irrigation management

Abstract

Gas exchanges influence growth, development and production of crops and are associated with the plant water conditions, which can be dependent on the soil and climate conditions. The present study aimed at evaluating transpiration, photosynthesis, stomatal conductance, internal CO2 concentration and foliar temperature of 'Tommy Atkins'mango trees under different irrigation treatments in the semiarid region of Bahia (BA, Brazil). The experimental design was a randomized block with five treatments and six replicates: 1, irrigation providing 100 % of crop evapotranspiration (ETc) in phases: I (early blooming to early fruit expansion), II (early expansion to early physiologic ripening) and in phase III (physiologic ripening of fruits); 2, regulated deficit irrigation (RDI) with 50 % of ETc in phase I; 3, RDI with 50 % ETc in phase II; 4, RDI with 50 % ETc in phase III; 5, no irrigation. Total or partial soil water deficit caused reduction in photosynthetic rate, transpiration and stomatal conductance of 'Tommy Atkins' leaves. Partial soil water deficit does not cause significant alterations in internal CO2 concentration or in leaf temperature of 'Tommy Atkins' mango trees.

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Author Biographies

Marcelo Rocha dos Santos, Instituto Federal de Educação, Ciência e Tecnologia Baiano Campus Guanambi
Engenharia Agrícola, Irrigação
Mauro Aparecido Martinez, Universidade Federal de Viçosa
Engenharia Agrícola
Sérgio Luiz Rodrigues Donato, Instituto Federal de Educação, Ciência e Tecnologia Baiano Campus Guanambi
Agronomia, Fitotecnia/Fisiologia
Published
2013-08-08
How to Cite
Santos, M. R. dos, Martinez, M. A., & Donato, S. L. R. (2013). Gas exchanges of ’Tommy Atkins’ mango trees under different irrigation treatments . Bioscience Journal, 29(5). Retrieved from http://www.seer.ufu.br/index.php/biosciencejournal/article/view/22166
Section
Agricultural Sciences