Enhancement of photosynthetic CO₂ assimilation in the absence of oxygen, as dependent upon species and temperature

Summary

The assimilation of CO₂ was enhanced in seven plant species by 44% at 30° in the absence of oxygen, and in three of the species by 85% at 40°. Net assimilation of CO₂ was not significantly greater in the absence of O₂ than it was in air with leaves of three tropical grasses and of one dicotyledonous species, Amaranthus palmeri. For two species in 30°, the enhanced CO₂ assimilation values were similar to those of the tropical grasses and of A. palmeri. The absence of O₂ did not enhance net CO₂ assimilation in maize even in light of low intensity.