SCALING TO A COMMON TEMPERATURE IMPROVES THE CORRELATION BETWEEN THE PHOTOSYNTHESIS PARAMETERS J(MAX) AND V-CMAX

A strong correlation between the photosynthetic parameters J(max) and V-cmax was found by Wullschleger (1993) in a survey of 109 plant speci es. Measurements were made at various leaf temperatures, but the tempe rature dependence of J(max) and V-cmax differ. Once values for J(max) and V-cmax in Wullschleger's analysis were adjusted to a common temper ature, using an equation for the temperature dependence of these param eters, the slope of the linear regression for J(max) versus V-cmax for ced through the origin increased from 1.97 to 2.68, and r(2) increased from 0.79 to 0.87.