Water-stress induced physiological changes in leaves of four container-grown grapevine cultivars (<i>Vitis vinifera</i> L.)

Authors

  • M. Gómez-del-Campo
  • P. Baeza
  • C. Ruiz
  • J. R. Lissarrague

DOI:

https://doi.org/10.5073/vitis.2004.43.99-105

Keywords:

dry matter, drought, night respiration, photosynthesis, stomatal conductance, transpiration, Vitaceae, water stress

Abstract

Predawn leaf water potential, night respiration, stomatal conductance, transpiration, and photosynthesis of 4 grapevine cultivars were assessed under irrigated and non-irrigated conditions in July, August and September 1994. Predawn leaf water potential was not significantly related to either stomatal conductance or photosynthesis. Water stress induced distinct stomatal closure in all cultivars at 11 a.m. For a given stomatal conductance rate, photosynthesis of stressed vines was lower than that of nonstressed vines. At similar stomatal conductance rate, photosynthesis was lower in cv. Chardonnay than in any other cultivar. Photosynthesis was the physiological parameter mostly affected by water stress. Dry matter production was linearly related to stomatal conductance, photosynthesis, and the night respiration to photosynthesis ratio for all vines pooled together. In contrast, under stress conditions dry matter production was not related to any physiological parameter.

 

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Published

2015-04-21

Issue

Vol. 43 No. 3 (2004): Vitis

Section

Article

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