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Abstract
The effect of acidic precipitation on vegetation is the result of an interaction between the acid and the plant. The metabolism of plants is dependent on optimal pH-values, which are maintained by regulation. There are differences in the effectiveness of regulation under such exogenous influences as acidic precipitation. These differences can be related to the resistance of plants to acidic precipitation or to certain pathogenic fungi. Such differences were measured as buffering capacity of homogenized leaves during titration with acid. There are significant differences in buffering capacity between clones in
Pinus spp. and
Picea abies. A highly significant variance in buffering capacity also was found among families of
P. abies. Calculations of genetical parameters show that the phenotypical variance of buffering capacity is governed mainly by genetical factors.
Parent Publication
Citation
Scholz, F.; Reck, S. 1976. Effects of acids on forest trees as measured by titration in vitro, inheritance of buffer capacity in Picea abies. In: Dochinger, L. S.; Seliga, T. A., eds. Proceedings of the first international symposium on acid precipitation and the forest ecosystem; Gen. Tech. Rep. NE-23. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 971-976
