Fine Root Regenerative Potential of Montane Norway Spruce under Pollution Impact : 2nd Slovenian Symposium on Plant Physiology with international Participation, Gozd Martuljek. Slovenia, September, 30 to Oktober 2nd, 1998

1999

S. 143-147

3 Abb., 5 Lit.

Unselbständiges Werk

200059344

Fine roots of six probably autochthonous Norway spruce stands in the Krkonose Mts. have been investigated since 1993. Fine root (roots with diameter < 1 mm) regenerative potential was estimated as the ratio between the fine root quantity in soil cores and fine roots ingrown into bags of silon net sieve. These bags were filled with the same humus soil substrate without roots, and installed into the same soil cores, and then harvested two years later. In addition, representative fine root tips were classified under dissecting microscope into five mycorrhizal developmental stages and three classes of vitality. Forest stands with high values of fine root quantity in soil cores (installed in 1994) had middle or low values of fine root regenerative potential (estimated in 1996). Root tip analysis revealed the decreasing vitality (percentage of turgid root tips) from the less developed, nonmycorrhizal root tips to the fully developed mycorrhizae in the dying forest stand in the Mumlavska hora plot. This tendency was not found in other forest stands.