engleski

Cell wall area variations of white poplar (Populus alba L.) juvenile wood

White poplar (Populus alba L.) is becoming interesting species for breeding because of its tolerance to drought and variations in levels of ground water. However, its wood anatomical properties have not been sufficiently investigated, whereas data on cell wall area can certainly be interpreted in relation to wood density. Fiber lumen area, vessel lumen area and ray area of white poplar juvenile wood from two sites in Croatia was measured. Cell wall area (%) was calculated as a percentage remain after detracting fiber lumen area, vessel lumen area and ray. Variations in cell wall area in radial direction (from pith to bark) and between trees within two white poplar populations were investigated. Preliminary results indicate that cell wall area varied significantly from pith to bark and between trees within one site. In juvenile wood from the other site, both variations were non-significant. In conclusion, variation significance demonstrates different cell wall area radial trends from both sites, suggesting that only one site confirms variable properties within juvenile wood. As well, different tree effect on cell wall area within two populations was detected.

cell wall area, juvenile wood, Populus alba L., wood anatomical properties variation.

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