Tkivna zgradba živih panjev navadne smreke (Picea abies (L.) Karst.) in navadne jelke (Abies alba Mill.)

Drolc, Miha (author), Šircelj, Helena (mentor), Gričar, Jožica (comentor)

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.

• Language: Slovenian
• Keywords: živi panj, Picea abies, Abies alba, tkivna zgradba
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Publisher: [M. Drolc]
• Year: 2023
• PID: 20.500.12556/RUL-150585
• UDC: 630*8:630*5(043.2)=163.6
• COBISS.SI-ID: 165688579
• Publication date in RUL: 21.09.2023

DROLC, Miha, 2023, Tkivna zgradba živih panjev navadne smreke (Picea abies (L.) Karst.) in navadne jelke (Abies alba Mill.) [online]. Bachelor’s thesis. M. Drolc. [Accessed 2 April 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=150585

Secondary language

• Language: English
• Title: Histological structure of Norway spruce (Picea abies (L.) Karst.) and silver fir (Abies alba Mill.) living stumps

Abstract

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.

• Keywords: living stumps, Picea abies, Abies alba, histological structure