Water Potential of Germinating Seeds
- 1 March 1975
- journal article
- research article
- Published by University of Chicago Press in Botanical Gazette
- Vol. 136 (1) , 106-108
- https://doi.org/10.1086/336789
Abstract
Propagules of 11 species of grasses and forbs were imbibed sufficiently on water-saturated filter paper so that germination could occur subsequent to transfer into Peltier thermocouple psychrometer chambers. Water-potential determinations, made periodically during germination, showed an initial increase toward equilibrium vapor pressure and a subsequent decline to a second approximate equilibrium as low as -17 bars The decline in water-potential levels may be due to increasing effects of the osmotic and matric components of the total water potential of the propagules.Keywords
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