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A portable system for simultaneous measurement of transpiration and CO2 exchange

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Abstract

A portable field system for simultaneous measurement of transpiration and CO2 exchange from leaves of fruit trees is described. CO2 concentration is measured by means of infra-red gas analysis, using small gas samples collected in syringes. Methods for analysing small gas samples are compared. The leaf chamber described can also be used in a conventional laboratory open gas-exchange system, its small volume permitting measurement of very rapid changes in gas exchange in response to experimental stimuli.

Resumen

Este artículo describe un sistema portátil para medir simultaneamente transpiración e intercambio de CO2 en hojas de árboles frutales en el campo. Para medir la velocidad de fotosíntesis se colectan pequeñas muestras de gas en jeringas y se inyectan al analizador de gases de luz infra-roja. Se comparan varios métodos para analizar las muestras. Se describe la cámara de absorción de CO2 utilizada, la cual puede tambien incorporarse a un sistema abierto convencional, su pequeño volumen permite detectar cambios rápidos en el intercambio de gases cuando se producen alteraciones en el ambiente.

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Authors and Affiliations

  1. East Malling Research Station, East Malling, ME19 6BJ, Maidstone, Kent, U. K.

    L. Fanjul, H. G. Jones & K. J. Treharne

Authors
  1. L. Fanjul
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  2. H. G. Jones
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  3. K. J. Treharne
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Fanjul, L., Jones, H.G. & Treharne, K.J. A portable system for simultaneous measurement of transpiration and CO2 exchange. Photosynth Res 1, 83–92 (1980). https://doi.org/10.1007/BF00018225

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  • DOI: https://doi.org/10.1007/BF00018225

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