The electric conductance of seedling stems and the water content of spruce and pine seedlings in the course of desiccation
Jan ČermákInstitute of Forest Ecology, University of Agriculture, 64400, Brno-Sobesice, CzechoslovakiaBrnoJiří KučeraInstitute of Forest Ecology, University of Agriculture, 64400, Brno-Sobesice, CzechoslovakiaBrnoJean–Claude SimonResearch Institute of Forestry, Research Station Opocno, 51773, Opocno, Na Olive 550, CzechoslovakiaV. DusekResearch Institute of Forestry, Research Station Opocno, 51773, Opocno, Na Olive 550, Czechoslovakia
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Аннотация
The dependence of electric conductance (admittance) of the stem on seedling water content (on the relative water content related to dry matter, or on the water saturation deficit, respectively) was followed in spruce and pine seedlings. The dependence was statistically highly significant and strong:r = 0.80 when individual plants were evaluated andr = 0.97 when mean values of twenty-seedlmg sets were taken into account. Electric conductance values can be used as a substitute) for water content determinations in plant tissues under defined conditions, although tho exact interpretation, especially of absolute values of those quantities with regard to their capacity component, remains to be offered.
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