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A Null-Point Compensating System for Simultaneous and Continuous Measurement of Net Photosynthesis and Transpiration by Controlled Gas- Stream Analysis



A Null-Point Compensating System for Simultaneous and Continuous Measurement of Net Photosynthesis and Transpiration by Controlled Gas- Stream Analysis



Botanical Gazette 125(2): 81-88



A method is described by which the exchange of water vapor and CO2 between the intact plant and its atmospheric environment can be continuously, simultaneously, and independently measured with a high degree of accuracy. Measurement is achieved by inclosing the shoot (or part of it) in a chamber and continuously compensating for the changes which the activity of the plant makes in the composition of the chamber atmosphere. The rate of compensation measures the process directly.

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Accession: 061071278

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DOI: 10.2307/2473267


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