20.500.12556/RUL-117866 Vpliv širine branik kostanjevine na odpornost proti glivam razkrojevalkam diplomski projekt Influence of growth ring-widths on chesnut durability against decay fungi Kostanjevino uvrščamo med najbolj naravno odporne slovenske lesne vrste. Želeli smo raziskati odpornost jedrovine kostanja na glive razkrojevalke. Pri hrastovem lesu se je izkazalo, da ima širina branik značilen vpliv na odpornost, zato smo se odločili ta fenomen raziskati tudi pri jedrovini kostanja. Izdelali smo vzorce kostanjevine iz lesa z različno širokimi branikami in jih izpostavili petim glivam razkrojevalkam lesa: Gloeophyllum trabeum, Antrodia vaillanti, Pleurotus ostreatus, Trametes versicolor in Stereum hirsutum. Glivam smo izpostavili tudi kontrolne vzorce smreke in bukve. Izgubo mase smo določili gravimetrično, po šestnajstih tednih izpostavitve. Ugotovili smo, da na naravno odpornost proti glivam razkrojevalkam lesa širina branike kostanjevine ne vpliva. Vsi preizkušanci so imeli izgubo mase zaradi delovanja gliv nižjo od 5 %, kar uvršča les med zelo odporne lesne vrste The chestnut is ranked among the most naturally durable wood species in Slovenia. Our aim was to determine the durability of the chestnut's heartwood to wood decay fungi. In previos studies on oak wood it has been proven that width effect durability of wood. Hence, we decided to analyse this phenomenon in the heartwood of the chestnut as well. Samples made of chestnut wood with various rings widths were exposed to five wood decay fungi, namely: Gloeophyllum trabeum, Antrodia vaillant, Pleurotus ostreatus, Trametes versicolor and Stereum hirsutum. In parallel control samples made of spruce and beech wood were exposed to fungi as well. Mass loss was determined gravimetrically after sixteen weeks of exposure. The results showed that the natural durability against wood decay fungi is not affected by the ring chestnut heartwood. Mass loss of the all investigated sweet chestnut wood species was lower than 5 %, which ranks this wood among the durable wood species. kostanjevina širina branik lesne glive razkroj chesnut ring-width wood fungi decay true false false [K. Krk] Slovenski jezik Angleški jezik Delo diplomskega projekta/projektno delo 2020-07-31 10:30:35 2020-07-31 10:30:40 2022-08-30 04:00:43 0000-00-00 00:00:00 2016 0 Ljubljana 2016 Ljubljana VIII, 38 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*844.2:630*811.4 2573193 DIP_Krk_Klemen_2016.pdf DIP_Krk_Klemen_2016.pdf 1 BD5C22C46DCF9494B0A9CE079B264901 b3b6c20b987c06c9e788f457f755b0fbc687db0a0d3fa6179ba25cd96a3a0212 48ab3314-a1b9-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=131791 Biotehniška fakulteta 0 0 0