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Okužba s pripravki CCB zaščitenih izpranih lesnih vzorcev z glivami razkrojevalkami lesa = Infection of CCB preserved and leached wood specimens with wood decay fungiHumar, Miha ; Pohleven, FrancLes, zaščiten s pripravki CCB, je odporen proti trohnjenju. Vendar v zadnjih letih opažamo, da se na lesu, impregniranem s CCB, pojavljajo okužbe z glivami, tolerantnimi na Cu. V raziskavi smo ... opazovali preraščanje in penetracijo hif na zaščitenih vzorcih, izpostavljenim glivam razkrojevalkam, in osvetlili vpliv izpiranja na kolonizacijo. Vzorce smo izdelali iz beljave smrekovine (Picea abies) in jih impregnirali s 5 % raztopino CCB v skladu s standardom SIST EN 113. Del kondicioniranih vzorcev smo izpirali po standardu SIST EN 84. V tretjino izpranih in neizpranih vzorcev smo vzdolžno zvrtali luknjo in vanjo vstavili palčko (r = 1,5 mm, l = 25 mm). Nato smo odprtino zatesnili z epoksidnim premazom. Sterilizirane impregnirane in neimpregnirane vzorce smo izpostavili dvema na baker tolerantnima sevoma (Antrodia vaillantii in Leucogyrophana pinastri) in dvema na baker občutljivima izolatoma (Poria monticola, Gloeophyllum trabeum). Po izpostavitvi smo iz vzorcev previdno odstranili palčko in jo postavili na sterilno hranilno gojišče, kjer smo dva tedna opazovali prisotnost hif. Stopnjo kolonizacije smo ovrednotili tudi z merjenjem CO2. Po 16 tednih izpostavitve smo ugotovili še izgubo mase izpostavljenih vzorcev. Neimpregnirane vzorce so najhitreje prerasle hife glive G. trabeum. Po drugi strani pa pri vzorcih, impregniranih s CCB, na palčkah tudi po 12 tednih izpostavitve nismo zasledili prisotnosti hif. Prodiranje hif pri izpranih impregniranih vzorcih je bilo bistveno hitrejše. Menimo, da je razlog za intenzivnejšo kolonizacijo izpranih vzorcev, impregniranih s CCB, izprani bor, ki v nižjih koncentracijah ni zaviral preraščanja micelija.Source: Zbornik gozdarstva in lesarstva = Research reports : forest and wood science & technology. - ISSN 0351-3114 (Št. 71, 2003, str. 125-136)Type of material - article, component partPublish date - 2003Language - slovenianCOBISS.SI-ID - 1123209
Author
Humar, Miha |
Pohleven, Franc
Topics
toleranca na baker |
CCB |
les |
glive razkrojevalke |
bor |
izpiranje |
preraščanje |
aspiracija |
copper tolerance |
CCB |
wood |
wood decay fungi |
leaching |
boron |
overgrow |
respiration |
respiration
source: Zbornik gozdarstva in lesarstva = Research reports : forest and wood science & technology. - ISSN 0351-3114 (Št. 71, 2003, str. 125-136)
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Humar, Miha | 19106 |
Pohleven, Franc | 05248 |
Source: Personal bibliographies
and: SICRIS
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