Phytohormones in needles of spruce (Picea abies (L.) Karst.) under different levels of air pollution in the open-top chamber experiment at Edelmannshof

1997

S. 235-256

14 Abb., 33 Lit. Ang.

Unselbständiges Werk

200104696

The plant hormones ethylene (ACC, MACC), abscisic acid and indoleacetic acid were investigated between August 1988 and December 1989 in current-year and one-year-old needles of the twelve spruce trees of the Edelmannshof experiment. Data from this period do not allow to reliably differentiate between consequences of the reduced impact of immissions (open-top chambers receiving charcoal-filtered air) and individual differences of the trees investigated. The conditions are discussed that might have made such a differentiation possible but which were not fulfilled at Edelmannshof.