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

1997

14 Abb., 33 Lit. Ang.

Unselbständiges Werk

12612

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.