Involvement of Exported Photosynthetic Products in the CO2Exchange of the Skeletal Shoots of Pine

Involvement of Exported Photosynthetic Products in the CO2Exchange of the Skeletal Shoots of Pine CO2exchange in the leafy and skeletal parts of attached shoots of Pinus sylvestrisL. was measured with an infrared gas-analyzer in an open differential system during daylight hours. The 14CO2assimilation rates in the leafy parts of shoots and 14CO2evolution from current photosynthetic products in the lower skeletal part of shoots were measured in afternoons. Chlorophyll content was measured in the needles of the same shoot. The carbon of exported assimilates contributed only about 4% to CO2exchange in the heterotrophic tree tissues. Only this component of CO2evolution from the surface of the skeletal part of the tree was related to the losses of the net primary photosynthetic production (NPP) in the aboveground part of the pine stand during the current growth period. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Involvement of Exported Photosynthetic Products in the CO2Exchange of the Skeletal Shoots of Pine

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Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 2001 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1023/A:1009027429242
Publisher site
See Article on Publisher Site

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