biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 17:434-442, 1975 | DOI: 10.1007/BF02921056

Transpiration in seven plant species colonizing a fishpond shore

J. Květ1
1 Institute of Botany, Czechoslovak Academy of Sciences, Třeboň

In 7 species (Eleocharis palustrisR. Br.,Juncus bufonius L.,Gypsophila muralis L.,Trifolium repens L.,Agrostis stolonifera L.,Potentilla anserina L. andAchillea millefolium L.) growing in a gradient of habitats from aquatic to terrestrial, on a sandy fishpond shore in Southern Bohemia, Czechoslovakia, the daily course of transpiration rate and water content was assessed gravimetrically in their cut-off transpiring parts on two typical summer days. Transpiration rate was largely controlled by microclimate but depressions occurred inJuncus and in some species growing in the drier habitats. The highest instantaneous transpiration rate and total daily transpiration per unit dry weight, about 100 mg g-1 min-1 and 50 g g-1 d-1, respectively, were recorded inAchillea andTrifolium. The water turnover rate ranged from 16.1 g g-1 (H2O) d-1 inJuncus to 10.7 inGypsophila. The estimated daily maximum water saturation deficit was highest inEleocharis (45.7%) and lowest inAchillea (15.0%). The adaptational significance of the observed phenomena is discussed.

Received: June 6, 1975; Published: November 1, 1975  Show citation

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Květ, J. (1975). Transpiration in seven plant species colonizing a fishpond shore. Biologia plantarum, 17(6), 434-442. doi: 10.1007/BF02921056
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