Iskanje po repozitoriju

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Ključne besede: varstvo gozdov, morfološke analize, Pityokteines curvidens, krivozobi jelov lubadar, Abies alba, bela jelka
Objavljeno v DiRROS: 28.06.2022; Ogledov: 104; Prenosov: 0

Ključne besede: varstvo gozdov, morfološke analize, Pityokteines, ostrozobi jelov lubadar, P. spinidens, Abies alba, bela jelka
Objavljeno v DiRROS: 28.06.2022; Ogledov: 94; Prenosov: 0

Povzetek: The timing of leaf phenology tends to be crucial in controlling ecosystem processes such as the acquisition of carbon and water loss as well as in controlling tree nutrient cycling. To date, tree phenology has mostly been associated with environmental control (e.g., temperature and photoperiod) in a relationship with inheritance, while it has rarely been linked with ectomycorrhizal community compositional changes through the host tree’s phenological stages. Seasonal variations of fungal communities have been widely studied, but little is known about mycorrhiza community composition changes along phenological stages. Therefore, we analyzed ectomycorrhizal communities associated with silver fir and their compositional changes during the transition between phenological stages. The phenological stages of each individual tree and time of bud break were monitored weekly for two years and, at the same time, ectomycorrhiza was harvested from selected silver fir trees. In total, 60 soil cores were analyzed for differences in the ectomycorrhizal community between phenological stages using Sanger sequencing of individual ectomycorrhizal morphotypes. A significant difference in beta diversity for an overall ectomycorrhizal community was confirmed between analyzed time periods for both sampled years. Species-specific reactions to transitions between phenological stages were confirmed for 18 different ectomycorrhizal taxa, where a positive correlation of Russula ochroleuca, Russula illota, Tomentella sublilacina, and Tylospora fibrillosa was observed with the phenological stage of bud burst.
Ključne besede: Abies alba (Mill.), ectomycorrhizal community, phenological stages
Objavljeno v DiRROS: 20.12.2021; Ogledov: 375; Prenosov: 237
Celotno besedilo (1,73 MB)
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Povzetek: Predstavljamo pregled raziskav Katedre za tehnologijo lesa pod vodstvom dr. Torellija o propadanju jelke (Abies alba Mill.) v Sloveniji. Raziskave v obdobju 1985-1996 so vključevale spremljanje stanja jelke s pomočjo merjenja električne upornosti (EU), anatomske in fiziološke interpretacije meritev EU, upadanje rasti in prirastka, študij fenologije, reproduktivne rasti, pojava sekundarne krošnje, ugotavljanje vlažnosti in kvalitete lesa, število sluznih celic v skorji in travmatskih smolnih kanalov v lesu ter odziv lesa in skorje na poškodovanje
Ključne besede: jelka, Abies alba, propadanje, električna upornost, anatomija lesa, anatomija skorje, rast
Objavljeno v DiRROS: 03.11.2021; Ogledov: 1094; Prenosov: 767
Celotno besedilo (874,15 KB)

Ključne besede: varstvo gozdov, morfološke analize, rjavenje smrekovih iglic, Rhizosphaera pini, bela jelka, Abies alba, listne uši, sesajoča žuželka
Objavljeno v DiRROS: 24.05.2021; Ogledov: 496; Prenosov: 173
Celotno besedilo (219,70 KB)