20.500.12556/RUL-150585 Tkivna zgradba živih panjev navadne smreke (Picea abies (L.) Karst.) in navadne jelke (Abies alba Mill.) Histological structure of Norway spruce (Picea abies (L.) Karst.) and silver fir (Abies alba Mill.) living stumps Žive panje pri svojem vsakodnevnem delu gozdarji opazijo v gozdovih. V Sloveniji jih ni do sedaj še nihče podrobneje analiziral. V sklopu diplomskega dela je bila narejena raziskava štirih živih panjev navadne jelke (Abies alba) in treh panjev navadne smreke (Picea abies) iz dveh različnih območij, za katera sta bila izdelana tudi fitocenološka popisa. Na živih panjih so bile izvedene makroskopske, histološke in citološke meritve. Za vsak panj posebej so bili izdelali trajni histološki preparati iz različnih delov pred in po poškodbi. Za en panj jelke in smreke sta bili izdelani tudi seriji trajnih maceratov. Ugotovljeno je bilo, da se struktura poranitvenega lesa, ki nastane po poseku drevesa med obravnavanima drevesnima vrstama razlikuje ter da se struktura lesa s časom normalizira. Drevo najprej začne tvoriti kalus, ki poskuša rano zapreti. Zgradba lesa je v njegovi bližini spremenjena, ni običajna. Potrjeno je bilo tudi dejstvo, da panji lahko živijo še veliko let po poseku. V obravnavanem primeru je eden od panjev navadne smreke priraščal še 29 let po poseku, kar je posledica zraščanja korenin sosednjih dreves. Navadno jelka naravno nima v lesu prisotnih smolnih kanalov. Ugotovljeno je bilo, da so v poranitvenem lesu pri njej prisotni travmatski smolni kanali. In their daily work, foresters discover living tree stumps in the forests. Until now, no one in Slovenia has carried out a detailed analysis of this phenomenon. In the diploma thesis, four living stumps of silver fir (Abies alba mill.) and three living stumps of norway spruce (Picea abies (l.) karst.) from two different areas were studied. Macroscopic, histological and cytological measurements were performed in the wood of living stumps. For this purpose, histological permanent cross-section of different parts of wood of each stump were made before and after cutting down the trees. In addition, series of permanent macerates were made from one fir and one spruce stump. We found that stumps first began to form a callus in attempt to rapidly close the wound. The wood structure near the wound is changed (so called wound-wound). It was shown that the structure of the injured wood, which developed after the tree was felled, differed between the two tree species in terms of the frequency of formation of traumatic resin canals. In spruce, which also has normal resin canals, they were significantly more frequent compared to fir, which does form resin canals under normal conditions. Furthermore, it was found that the structure of the wood normalises over time. It has also been confirmed that stumps can live for many years after tree harvesting. One of the spruce stumps continued to grow 29 years after felling, which was probably due to the root grafting with neighbouring trees. živi panj Picea abies Abies alba tkivna zgradba living stumps Picea abies Abies alba histological structure true false false [M. Drolc] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2023-09-21 07:16:22 2023-09-21 07:16:26 2023-09-25 15:00:32 0000-00-00 00:00:00 2023 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*8:630*5(043.2)=163.6 230327 165688579 34833.pdf 34833.pdf 1 8673CEF8482ED3F51EB9F86C17270B00 bbeba03b7cf9dc99b818067f286b01c0915bb84b3b0b71c8e2d171deb8286a36 02bb6ef6-583e-11ee-82e5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=175181 Biotehniška fakulteta 0 0 0