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Antioxidants as indicators of stress in Norway spruce needles
1995
Ribaric-Lasnik, C. (ERICO, Velenje (Slovenia)) | Batic, F. (Ljubljana Univ. (Slovenia). Biotechnical Fac., Agronomy Dept.) | Grill, D. (Graz Univ. (Austria). Plant Physiology Inst.)
Among a variety of stress indicators for early identification of Norway spruce (Picea abies (L.) Karsten) decline the sulphur content, photosynthetic pigment content, activity of the enzyme peroxidase, watersoluble thiols and ascorbic acid in 4 age classes of 5 spruce needles were analysed. The 10 sampling sites were selected according to the degree of forest decline, sea level, distances from the Thermal Power Plant Sostanj and air pollution.
Show more [+] Less [-]Bioelectrical characterization of tree conditions and slime cells as possible symptoms of Silver fir decline
1995
Torelli, N. | Cufar, K. | Oven, P. (Ljubljana Univ. (Slovenia). Biotechnical Fac., Wood Science and Technology Dept.)
The condition of silver fir (Abies alba Mill.) trees was monitored 1988-1994 by measuring electrical resistance of living tissues at breast height. Slime cells in bark and traumatic resin canals in wood were investigated as possible symptoms of silver-fir decline.
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