| Title: | Zgradba reakcijskih con pri bukvi (Fagus sylvatica L.) |
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| Authors: | ID Oven, Primož (Author)
ID Zupančič, Martin (Author)
ID Merela, Maks (Author)
ID Torelli, Niko (Author) |
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| Files: |  PDF - Presentation file, download (2,20 MB)
MD5: D040DBEAA0CDB8F2DF5C998F5A2F4362
PID: 20.500.12556/dirros/39ab892f-f351-4d8b-806a-582cd84fc255
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| Language: | Slovenian |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  SciVie - Slovenian Forestry Institute
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| Abstract: | Pri bukvi (Fagus sylvatica L.) smo raziskovali mejne kompartmentalizacijske plasti izvotljenih ter razkrajajočih se debelnih sredic. Mejne plasti pri vsehpreiskanih drevesih anatomsko ustrezajo reakcijskim conam in ne bariernim conam kot jih predpostavlja model CODIT. V osrednjem delu reakcijske cone so bile traheje intenzivno okludirane z gumoznimi snovmi in suberiziranimi tilami. Lumni trakovnega in aksialnega parenhima, vlaknastih traheid in vse pikenjske odprtine so bili zapolnjeni z netopnimi depoziti. Za notranji del reakcijskih con je značilen razkroj celičnih sten in depozitov, suberizirane strukture pa so ostale nespremenjene. Pri reakcijskih conah, ki mejijo neposredno na duplino, je ta del manjkal, na površini reakcijske cone v duplini so vidna trosišča gliv. Povečana količina škroba v parenhimskih celicah in različne razvojne faze til v zunanjem delu reakcijske cone kažejo na aktivne kompartmentalizacijske procese. Aktivna obrambna in pasivna zaščitna funkcija reakcijskih con v živem drevesu sta podrobneje analizirani.Compartmentalization boundary layers surrounding hollow and decaying stem cores were investigated in beech (Fagus sylvatica L.). In all investigated trees, boundary layers corresponded anatomically to the reaction zones and notto the barrier zones as proposed by the CODIT model. In the central part ofreaction zones, vessels were heavily occluded with deposits of gums and suberised tyloses, whereas the lumina of ray and axial parenchyma, fibre tracheids and all pit apertures were filed with insoluble deposits. The inner part of reaction zones exhibited decay of cell walls and deposits, leaving suberized structures intact. This part was absent in the reaction zones bordering directly on the hollow, although fungal fruit bodies were present onthe surface of the reaction zone. Increased amount of starch grains and different growing stages of tyloses in the outer part of reaction zones indicated active compartmentalization processes. The paper discusses in detailthe active defensive and passive protective function of reaction zones in the living trees. |
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| Keywords: | bukev, Fagus sylvatica L, razkroj, izvotlitvena drevesa, dupline, kompartmentalizacija, reakcijska cona |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Year of publishing: | 2004 |
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| Number of pages: | str. 51-62 |
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| Numbering: | Vol. 73 |
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| PID: | 20.500.12556/DiRROS-7597  |
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| UDC: | 630*176.4 Fagus sylvatica L.:160.202+523(045) |
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| ISSN on article: | 0351-3114 |
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| URN: | URN:NBN:SI:doc-820HBUI5 |
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| COBISS.SI-ID: | 1267878 |
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| Publication date in DiRROS: | 12.07.2017 |
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| Views: | 4980 |
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| Downloads: | 2067 |
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