doiSerbia

Correlations between the anatomical traits of Gymnocladus canadensis Lam. in heartwood and sapwood of early- and latewood zones of growth rings

Jokanović Dušan (Faculty of Forestry, Belgrade)
Vilotić Dragica (Faculty of Forestry, Belgrade)
Mitrović Suzana (Institute of Forestry, Belgrade)
Miljković Danijela (Institute for Biological Research "Siniša Stanković", Department of Evolutionary Biology, Belgrade)
Rebić Milan (Water management and Forestry, Provincial Secretariat for Agriculture, Novi Sad)
Stanković Dragica (Faculty of Forestry, Belgrade)
Nikolić Vesna (Faculty of Forestry, Belgrade)

This paper shows correlations between vessel characteristics and differences in growth-ring width in heartwood and sapwood. Analyzed samples were from an iron-wood tree (Gymnocladus canadensis Lam.) that grew in the Mužljanski Rit area, of the Srpska Crnja municipality in Serbia. According to previous research, it was deduced that Gymnocladus canadensis Lam. belongs to ring-porous species with big vessel lumen in the earlywood zone and thicker cell walls in the latewood. Vessels were more numerous in the latewood zone, and the same was true for heartwood and sapwood. For both layers, sapwood possessed a few more vessels than heartwood, and a statistically significant difference was confirmed by t-test during the early phase. The greatest negative value of correlation coefficient was between the number of vessels and growth-ring width during the early phase for sapwood. The number of vessels decreased in the wider growth rings. The correlation between growth-ring width and the area of vessels had a statistically significant positive value of correlative coefficient, which means that wider growth rings had larger vessel areas in the early phase for sapwood.

Keywords: Gymnocladus canadensis Lam., number of vessels, area of vessels, growth rings width, correlations

Projekat Ministarstva nauke Republike Srbije, br. 31041