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Relations Between CO2 Exchange Rate, CO2 Compensation, and Mesophyll Resistance from a Simple Field Method

Cary, J.W. (1977) Relations Between CO2 Exchange Rate, CO2 Compensation, and Mesophyll Resistance from a Simple Field Method. Crop Science. 17(3):453-456.

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Abstract

An equation is developed that relates apparent photosynthesis
to CO? light compensation values, resistance to
CO? diffusion in air, and the apparent mesophyll resistance
to CO? transport. The equation also yields values
for total photosynthesis and light respiration from measurements
of apparent photosynthesis. A simple method
for measuring leaf CO? exchange rates in the field with
a hand-operated syringe is described. Results obtained
with this device and data published in recent literature
are used with the new equation to show that photosynthesis
may be limited more by mesophyll resistance than
by photorespiration.

Item Type: Article
NWISRL Publication Number: 0376
Subjects: Research methodology
Mass Import - autoclassified (may be erroneous)
Depositing User: Dan Stieneke
Date Deposited: 20 Nov 2010 21:51
Last Modified: 06 Feb 2017 23:29
Item ID: 319
URI: https://eprints.nwisrl.ars.usda.gov/id/eprint/319