1. Tehnične smernice za ohranjanje in rabo genskih virov : veliki in poljski jesen = Fraxinus excelsior / Fraxinus angustifoliaMarjana Westergren, Hojka Kraigher, 2010, professional article Keywords: genski viri, drevesne vrste, tehnične smernice, veliki jesen, Frafinus excelsior, poljski jesen, Fraxinus angustifolia, Slovenija Published in DiRROS: 18.12.2023; Views: 200; Downloads: 54 Full text (188,71 KB) |
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4. Poročilo o preskusu št.: LVG 2023-078 : vzorec št. 2023/00485Nikica Ogris, 2023, expertise, arbitration decision Keywords: varstvo gozdov, morfološke analize, mali jesen, Fraxinus ornus, jesenov škrlup, jesenova pepelovka, Hymenoscyphus fraxineus Published in DiRROS: 25.08.2023; Views: 276; Downloads: 96 Full text (1,12 MB) |
5. Poročilo o preskusu št.: LVG 2022-176 : vzorec št. 2022/00696Nikica Ogris, 2022, expertise, arbitration decision Keywords: varstvo gozdov, morfološke analize, mali jesen, poljski jesen, Fraxinus ornus, pepelovka, Erysiphe salmonii, Phyllactinia fraxini Published in DiRROS: 19.10.2022; Views: 403; Downloads: 114 Full text (1,12 MB) |
6. Poročilo o preskusu št.: LVG 2021-341 : opis vzorca: Fraxinus excelsior, les, lubje, sekanci : namen testiranja: sum na: Anoplophora chinensisMaarten De Groot, Peter Smolnikar, 2021, expertise, arbitration decision Keywords: varstvo gozdov, morfološke analize, beli jesen, veliki jesen, Fraxinus excelsior, Anoplophora chinensis, kitajski kozliček Published in DiRROS: 29.10.2021; Views: 685; Downloads: 0 |
7. Poročilo o preskusu št.: LVG 2021-183 : opis vzorca: Fraxinus ornus, les, lubje, sekanci, št. enot 5 : namen testiranja: sum na: Xylosandrus crassiusculusAndreja Kavčič, 2021, expertise, arbitration decision Keywords: varstvo gozdov, morfološke analize, Fraxinus ornus, Xylosandrus crassiusculus Published in DiRROS: 24.09.2021; Views: 657; Downloads: 0 |
8. Timeline of leaf and cambial phenology in relation to development of initial conduits in xylem and phloem in three coexisting sub-Mediterranean deciduous tree speciesJožica Gričar, Andreja Vedenik, Gregor Skoberne, Polona Hafner, Peter Prislan, 2020, original scientific article Abstract: It is unclear how the anticipated climate change will affect the timing of phenology of different tree organs/tissues and thus the whole-tree functioning. We examined the timing of leaf phenology and secondary growth in three coexisting deciduous tree species (Quercus pubescens Willd., Fraxinus ornus L. and Ostrya carpinifolia Scop) from a sub-Mediterranean region in 2019. In addition, we investigated the relationship between leaf and cambial phenology and the onset of the potential functioning of initial conduits, as determined by the completed differentiation process (vessels) or final size (sieve tubes). For this purpose, leaf development was monitored and the microcores of cambium and the youngest phloem and xylem increments were repeatedly collected at 7-10-day intervals during the growing season. The results revealed differences in the timing of leaf development and seasonal radial growth patterns in spring among the studied tree species, depending on wood porosity. We found that cambial cell production started in all cases in the first half of March. However, in ring-porous Q. pubescens and F. ornus, radial growth in the stem occurred more than a month before buds were swollen, whereas in diffuse-porous O. carpinifolia, these two events were detected at almost the same time. The end of cambial cell production occurred earliest in F. ornus (mid-July) and two weeks later also in the other two species. The widest initial earlywood vessels and early phloem sieve tubes were found in Q. pubescens, the narrowest initial earlywood vessels in O. carpinifolia and the narrowest early phloem sieve tubes in F. ornus. This indicates differences in the e%ciency of conducting systems among the studied species. This novel approach of studying phloem phenology and anatomy in relation to leaf and xylem development contributes to a better understanding of how different tree species adapt their structure of secondary vascular tissues in response to environmental change. Keywords: Quercus pubescens, Fraxinus ornus, Ostrya carpinifolia, earlywood, early phloem, vessel, sieve tube, radial growth Published in DiRROS: 21.10.2020; Views: 1278; Downloads: 927 Full text (1,39 MB) This document has many files! More... |
9. Jesenov glivični rak v Črnem logu (Neonectria galligena)Nikica Ogris, Dušan Jurc, Drago Trajber, 2009, professional article Keywords: veliki jesen, Fraxinus excelsior L., glivični rak, Neonectria galligena, bolezni drevja, gozdovi, varstvo gozdov Published in DiRROS: 29.07.2020; Views: 1517; Downloads: 796 Link to full text This document has many files! More... |
10. Prezgodnje odpadanje listov velikega jesena je povzročila gliva Hymenoscyphus albidus, povzročiteljica jesenovega ožigaNikica Ogris, Tine Hauptman, Mojca Bogovič, 2010, professional article Keywords: veliki jesen, Fraxinus excelsior L., glive, Hymenoscyphus albidus, listi, jesenov ožig, bolezni drevja, gozdovi, varstvo gozdov Published in DiRROS: 29.07.2020; Views: 1516; Downloads: 758 Link to full text This document has many files! More... |