Author/Authors :
JELONEK, Tomasz Poznan University of Life Sciences - Department of Forest Utilisation, POLAND , PAZDROWSKI, Witold Poznan University of Life Sciences - Department of Forest Utilisation, POLAND , TOMCZAK, Arkadiusz Poznan University of Life Sciences - Department of Forest Utilisation, POLAND , ARASIMOWICZ-JELONEK, Magdalena Adam Mickiewicz University of Poznan - Department of Plant Ecophysiology, POLAND , GZYL, Jaroslaw Adam Mickiewicz University of Poznan - Department of Plant Ecophysiology, POLAND , FLORYSZAK-WIECZOREK, Jolanta Poznan University of Life Sciences - Department of Plant Physiology, POLAND
Abstract :
In this study the proportion of lignin in wood tissue was analysed in 36 Scots pines differing in their form of dead bark. Material for analyses came from pure pine stands aged 89-91 years located in northern Poland. Chemical analyses were performed in the mature wood zone comprising the last 10 diameter increments located at a height of 1.3 m (DBH). Results indicate differences in lignin content and growth rate in pines whose stems were characterized by different forms of dead bark. The study showed significant differences in lignin contents between trees with shell and scaly dead bark and trees with ropy bark form. Pines with ropy bark were characterized by the lowest lignin content in relation to trees having the other 2 forms of dead bark. Moreover, a relationship was observed between diameter growth rate and lignin content in wood tissue.
