Needle cytokinin content as a sensitive bioindicator of N pollution in Sitka spruce
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چکیده
منابع مشابه
Taxus baccata as a Bioindicator of Urban Environmental Pollution
Concentrations of the elements Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, N, Ni, P, Pb, and Zn were measured in needles and bark of Taxus baccata from the urban environment of Wrocław, Poland, and from a control site relatively free from pollution. In Wrocław the concentrations of N, P, K, and Mg in needles were significantly higher than in bark, but concentrations of Cd, Co, Cr, Cu Fe, Ni, and Zn were...
متن کاملSitka Spruce Quality Estimation using Neural Networks
This paper describes an automated classifier for the identification of good wood and knotty wood from computer tomography (CT) images of logs. Such a system is intended to allow better assessment of saw logs before being cut into timber. We describe a new empirical model for the growth of Sitka Spruce (Picea Stichensis (Bong, Carr)) whose operation is adapted to Irish conditions. The use of Hop...
متن کاملAfrican land snail Achatina marginatus, as bioindicator of environmental pollution
Activity of xanthine oxidase, levels of lipid peroxidation and ascorbic acid were studied in African land snail (Achatina marginatus) from two sites with different pollution potentials. Lipid peroxidation was significantly higher in the snails from the polluted site compared to the value obtained from the same species from the control site. Similarly, the activity of xanthine oxidase in the sna...
متن کاملLong-term exposure of Sitka spruce seedlings to trichloroacetic acid.
Trichloroacetic acid (TCA) has been implicated as an airborne pollutant responsible for adverse effects on forest health. There is considerable debate as to whether TCA observed in trees and forest soils is derived from atmospheric deposition or from in situ production. This experiment reports the results from treating 4-year-old Sitka spruce (Picea sitchensis (Bong.) Carr) plants in a greenhou...
متن کاملGeographic variation in resin canal defenses in seedlings from the Sitka spruce × white spruce introgression zone
Seedlings from 18 provenances along a coast–interior transect in the Picea sitchensis (Bong.) Carrière × Picea glauca (Moench) Voss introgression zone in northwestern British Columbia were mechanically wounded at the beginning of their third growing season to simulate natural attack by the white pine weevil, Pissodes strobi (Peck). Constitutive resin canals (CRC) in the cortex and traumatic res...
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ژورنال
عنوان ژورنال: Plant, Cell & Environment
سال: 2003
ISSN: 0140-7791
DOI: 10.1046/j.1365-3040.2003.01109.x