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Hydraulic Conductance and Water Potential Differences Inside Leaves of Tropical Evergreen and Deciduous Species

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Biologia Plantarum

Abstract

Several pieces of research suggest that leaf liquid-path conductance (K1) may be smaller in evergreen species (EG) than in deciduous species (DC), coexisting in tropical dry forests. This was investigated in four DC and two EG in a tropical dry forest in Venezuela. The K1 (kg m-2 MPa-1 s-1) were consistently lower in EG (8.4 × 10-5) than in DC (12 to 20 × 10-5). Differences in water potential (ΔΨW) inside the leaves were calculated using K1 values in connection with maximum transpiration rates measured in the field. It was found that ΔΨW was about 1.9 MPa in EG, intermediate for one DC (Pithecellobium dulce, 1.7 MPa) and minimum for other DC (1.0 to 1.3 MPa).

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References

  • Borchert, R.: Soil and stem water storage determine phenology and distribution of tropical dry forest trees.-Ecology 75: 1437-1449, 1994.

    Google Scholar 

  • Jones, H.G., Sutherland, R.A.: Stomatal control of xylem embolism.-Plant Cell Environ. 14: 607-612, 1991.

    Google Scholar 

  • Sobrado, M.A.: Aspects of tissue water relations and seasonal changes in leaf water potential components in evergreen and deciduous species coexisting in tropical dry forests.-Oecologia 68: 413-418, 1986.

    Google Scholar 

  • Sobrado, M.A.: Cost-benefit relationship in deciduous and evergreen leaves of tropical dry forest species.-Funct. Ecol. 5: 608-616, 1991.

    Google Scholar 

  • Sobrado, M.A.: Embolism vulnerability in drought-deciduous and evergreen species of a tropical dry forest.-Acta occol. 18: 383-391, 1997.

    Google Scholar 

  • Sobrado, M.A., Cuenca, G.: [Water use in deciduous and evergreen speices in a tropical dry forest of Venezuela.]-Acta Cient. venez. 30: 302-308, 1979. [In Span.]

    Google Scholar 

  • Tyree, M.T., Patino, S., Bennink, J., Alexander, J.: Dynamic measurements of root hydraulic conductance using a high-pressure flowmeter in the laboratory and in the field.-J. exp. Bot. 46: 83-94, 1995.

    Google Scholar 

  • Tyree, M.Y., Sinclair, B., Lu, P., Granier, A.: Whole shoots hydraulic resistance in Quercus species measured with a new high-pressure flowmeter.-Ann. Sci. forest. 50: 417-423, 1993.

    Google Scholar 

  • Tyree, M.T., Sobrado, M.A., Stratton, L.J., Becker, P.: Diversity of hydraulic conductance in leaves of temperate and tropical species: Possible causes and consequences.-J. trop. Forest. Sci. 1998 (in press).

  • Yang, S., Tyree, M.T.: Hydraulic architecture of Acer succharum and A. rubrum. Comparison of branches to whole trees and the contribution of leaves to hydraulic resistance.-Tree Physiol. 12: 231-242, 1993.

    Google Scholar 

Download references

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Authors and Affiliations

  1. Laboratorio de Biología Ambiental de Plantas, Departamento de Biología de Organismos, Universidad Simon Bolívar, Apartado 89.000, Caracas, 1080 A, Venezuela

    M. A. Sobrado

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  1. M. A. Sobrado
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Sobrado, M.A. Hydraulic Conductance and Water Potential Differences Inside Leaves of Tropical Evergreen and Deciduous Species. Biologia Plantarum 40, 633–637 (1997). https://doi.org/10.1023/A:1001725808647

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  • DOI: https://doi.org/10.1023/A:1001725808647

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