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2 Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

2 2012

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Selected characteristics of macro and microstructure of pine wood with developed reaction tissue within a single tree

Fabisiak Ewa, Pazdrowski Witold, Nowaczyk Jolanta

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

2012

No. 77

227-231

The paper presents results of measurements for annual ring widths in reaction, opposite and lateral wood formed in the same vegetation periods in pine (Pinus sylvestris L.). In the compared wood tissues tracheid lengths was also measured. The widest annual rings were found in the reaction wood zone. In that area of the stem cross-section tracheids were by approx. 20% shorter than those located on the opposite side of the pith.

A study on the dependence between tracheid lengths and microfibril angle in resonant wood of spruce (Picea abies L.)

Fabisiak Ewa, Moliński Waldemar, Kudela Jozef, Mania Przemysław

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

2012

No. 77

222-226

The paper presents results of measurements for tracheid lengths in annual growth rings in spruce wood classified as resonant wood. Annual rings came from the mature wood zone. Moreover, cellulose microfibril angle (MFA) was determined in the S2 layer of the secondary cell wall. This parameter was measured in tangential tracheid walls. Mean values of both tracheid lengths and MFA in the experimental annual growth rings showed slight fluctuations and the relationship of these values was described using a linear function.