DRYING EFFECT, AT 100^OC, ON Pinus taeda L. PIT MEMBRANES

ABSTRACT

This work has the purpose to verify the wood drying effects, at 100^oC, on pit membranes of Pinus taeda L., which can modify the wood permeability. Wood blocks were made at 2,0 x 2,0 x 2,5 cm dimensions. After room and 100^oC temperatures’ drying, oriented anatomical cuts were carried out to analyse the high temperature effects on pit membranes. The drying at 100^oC presented an increase of damage of pit membranes. Consequently, the wood permeability can. Moreover, the wood drying at room temperature presented a few and restricted damaged pit membranes. It was observed the starch presence in the respective samples at room temperature’s drying.

Key words
drying; pit; pit membranes.