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Maintenance and growth components of dark respiration rate in leaves of C3 and C4 plants as affected by leaf temperature
Authors:M. Kaše  J. Čatský
Affiliation:1. Institute of Experimental Botany, Czechoslovak Academy of Sciences, Flemingovo n. 2, 160 00, Praha 6, Czechoslovakia
Abstract:The rates of maintenance and growth components of leaf dark respiration of a C3 plant (Phaseolus vulgaris L.) and C4 plant (Zea mays L.) as affected by temperature were studied using the McCree concept. Respiration rates were measured by means of infrared gas analysis in a closed gas exchange system. In both C3 and C4 species RD and Rm increased with temperature in the temperature range (15–62 °C) studied. RG depended on temperature with an optimum near the temperature optimum of gross photosynthetic rate, Pg. Significant correlation between RD and RM and between RG and PG was found.
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