Photosynthesis & transpiration from upper & lower surfaces of intact banana leaves

Photosynthesis & transpiration from upper & lower surfaces of intact banana leaves.

The use of modern gas analysis instrumentation makes it possible to obtain continuous recordings of transpiration (3, 6, 8, 12, 13, 23) and photosynthesis (4, 5, 16, 19) from intact portions of higher plants. The high sensitivity and rapid response of these instruments permits one to determine rather subtle effects of various internal or environmental factors on physiological processes involvin...

Rapid Changes in Transpiration in Banana Leaves.

Rapid changes in the transpiration rate from a leaf or leafy shoot as a result of excision of that leaf or shoot have been observed in many plants bv many investigators (1, 2, 5, 7, 10, 11, 12, 13, 16). In banana plants, both photosynthesis and transpiration have been found to change rapidly following excision of the leaf (7). The mechanism underlying such rapid changes in transpiration has bee...

Measuring Transpiration Resistance of Leaves.

to diffuisive and turbulent vapor flux in the external air, a similar diffusive resistance which results from the internal leaf geometry, inclusive of the stomlata, and1 parallel to the latter, a resistance to vapor diffusion1 throu-gh the cuticle. In contrast. the last 2 resistances do not exist in the evaporation froml an open water sturface or a moist blotter paper. The resistanice in these ...

Endogenous rhythmic activity of photosynthesis, transpiration, dark respiration, and carbon dioxide compensation point of peanut leaves.

At 14-hour day length, 25 C leaf temperature, 9 mm Hg vapor-pressure deficit, and 1.17 joules cm(-2) min(-1) irradiance, the diurnal change in daily photosynthesis of the cultivated peanut (Arachis hypogaea L.) is a result of an endogenously controlled circadian rhythm in net photosynthesis which peaks near noon and troughs near midnight. By resetting the day-night light regime, the rhythm reph...

Influence of Bordeaux Mixture and Its Component Parts on Transpiration and Apparent Photosynthesis of Apple Leaves.