Intra-individual variability of morpho-anatomical properties of needles of Serbian spruce, Bosnian pine, Pyramidal fir and Swiss pine
2012
Nikolić, Biljana (Institute of Forestry, Belgrade (Serbia)) | Ratknić, Mihailo (Institute of Forestry, Belgrade (Serbia)) | Dražić, Dragana (Institute of Forestry, Belgrade (Serbia)) | Veselinović, Milorad (Institute of Forestry, Belgrade (Serbia)) | Mitrović, Suzana (Institute of Forestry, Belgrade (Serbia))
In investigation of variability of morpho-anatomic properties of Serbian spruce (Picea omorika /Panč./ Purkynĕ), Bosnian pine (Pinus heldreichii Christ.), Pyramidal fir (Abies alba var. pyramidalis Tošić) and Swiss pine (Pinus cembra L.), 13 characteristics of two-year old needles were measured: needle length, fascicle sheat length, needle width, needle thickness, cuticle + epidermis thickness, hypodermis thickness, central cylinder width, central cylinder thickness, number of vascular bundles, vascular bundle width, vascular bundle thickness, number of resin canals and resin canal diameter. The most variable properties were needle length and needle thickness as well as central cylinder width and central cylinder thickness. In Picea omorika needles the average values were 10.3 mm for needle length, 1.5 mm for needle width and 0.8 mm for needle thickness. In P. heldreichii needles the average values were 82.2 mm for needle length, 1.4 mm for needle width and 0.7 mm for needle thickness. In A. alba var. pyramidalis needles the average values were 20.0 mm for needle length, 1.95 mm for needle width and 0.5 mm for needle thickness. In P. cembra needles the average values were 77.5 mm for needle length, 1.1 mm for needle width and 0.9 mm for needle thickness. Average resin canal diameter was 33.8 µm in P. omorika needles, 41.3 µm in P. heldreichii needles, 127.9 µm in A. alba var. pyramidalis needles, and 76.8 µm in P. cembra needles. All analysed properties were compared with appropriate literature sources.
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