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Photosynthetic activity of stems and leaves of apple, sweet cherry, and plum trees

Jan Pilarski

The Franciszek Górski Department of Plant Physiology
Polish Academy of Sciences
Sławkowska 17, 31-016 Kraków, Poland
e-mail: j.pilarski@zfr.pan.krakow.pl

Investigations were carried out on the leaves and current year stem increments of three species of fruit trees: apple, sweet cherry, and common plum. It was found that the stems were photosynthetically active and capable of photosynthetic CO2 uptake from the outer atmosphere. They reacted to changes in the intensity of irradiation in a way similar to that of the leaves. The maximum net photosynthesis of stems was smaller than that of the leaves, amounting to about 12% in the apple and sweet cherry trees and about 16% in the common plum trees.

Pilarski J., 2000. Photosynthetic activity of stems and leaves of apple, sweet cherry, and plum trees. Folia Horticulturae 12/1: 41-44.