โ Scribed by B. Casereto
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
## Detached leaves of Bryophyllum fedtschenkoi Hamet et Perrier kept in normal air show a single period of net CO2 fixation on transfer to constant darkness at temperatures in the range 0-25 ~ The duration of this initial fixation period is largely independent of temperature in the range 5-20 ~ bu
Nitrate reductase (NR, NADH:nitrate oxidoreductase, EC 1.6.6.1) from barley (Hordeum vulgate L. cv. Hassan) leaves was inactivated during a light-dark transition, losing approx. 50% of activity after 30 min of darkness. The dark inactivation was reversed by illumination of the seedlings, the kinetic
C O 2 fixation was studied in a lichen, Xanthoriaparietina, kept in continuous light, and with cyclic changes in light intensity, dark period or temperature. The diurnal and seasonal courses of CO 2 exchange were followed. The rate of net photosynthesis was observed to fall from morning to evening,