A Rapid Field Method for Measuring Photosynthesis with Labelled Carbon Dioxide
- 1 May 1969
- journal article
- Published by Oxford University Press (OUP) in Journal of Experimental Botany
- Vol. 20 (2) , 381-401
- https://doi.org/10.1093/jxb/20.2.381
Abstract
A portable field apparatus for the measurement of photosynthesis is described. Short pulses (20 s) of air containing 14CO2 are applied to circular leaf areas of 1 cm2, enclosed in a transparent miniature chamber; the radioactivity of the leaf areas is measured by liquid scintillation, using a new in-vial wet combustion technique. Typical daily courses of photosynthesis in maize and cotton are presented.Keywords
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