Einfluß der Frucht auf Photosynthese und Atmung

Fruit Effect on Photosynthesis and Respiration Several investigations about fruit effects on photosynthesis and respiration, mainly of Citrus madurensis (Lour.) and Solanum melongena (L) plants are reviewed. Fruiting plants had higher photosynthetic rates (mg CO₂ · dm^?2 · h^?1) than non fruiting ones, particularly during stages of most intensive fruit growth. The photosynthetic rates could be stimulated by increasing fruit temperatures. No differences in dark respiration rates of fruiting and non fruiting plants were observed. However photorespiration was considerably higher in non fruiting plants as compared to fruiting ones. Leaves of non fruiting plants accumulated more sugars and starch in the leaves during the light periods than fruiting ones. The gaseous diffusive resistance of leaves was higher in non fruiting as compared to fruiting ones. The higher photosynthetic efficiency of fruiting plants is probably controlled by several mechanisms, some of which were discussed in the paper.