20.500.12556/DiRROS-7701 Dinamika ksilogeneze pri gradnu v letu 2007 Xylogenesis dynamics in sessile oak during 2007 S svetlobnim mikroskopom smo raziskali sezonsko dinamiko nastanka lesa pri gradnu (Quercus sessiliflora Salisb.) v rastni sezoni 2007. Konec marca so se delitve v kambiju že začele in število celic je naraslo na 10-11 slojev. Maksimalno celično produkcijo smo na ksilemski strani zabeležili v drugi polovici maja, ko smo ugotovili prek 100 ?m prirastka na teden. Kambijeva aktivnost se je zaključila do sredine avgusta in število celic je upadlo na 5-7 slojev. Oblikovanje sekundarne stene in lignifikacija v terminalnih celicah kasnega lesa pa sta potekala še nadaljnjih 4-5 tednov. Dinamika nastanka lesa pri gradnu se razlikuje od debelinske rasti iglavcev. We investigated seasonal dynamics of wood formation in sessile oak (Quercus sessiliflora Salisb.) during the vegetation period of 2007, using light microscope. Divisions in the cambium already started at the end of March when the number of cells increased up to 10-11 layers. Maximal cell production was recorded in the second half of May when more than 100 ?m of the increment was formed per week. Cambial activity ceased by mid-August and the number of cambial cells diminished to 5-7 layers. However, secondary cell wall formation and lignification of terminal late wood cells took place for additional 4-5 weeks. The dynamics of wood formation in sessile oak differs from radial growth patterns of conifers. Quercus sessiliflora ksilogeneza kambijeva aktivnost traheja rani les kasni les Quercus sessiliflora xylogenesis cambial activity vessel early wood late wood true false true Slovenski jezik Ni določen Znanstveno delo 2017-07-12 09:19:05 2017-07-12 09:19:05 2022-08-14 13:25:10 0000-00-00 00:00:00 2008 0 0 str. 45-50 Vol. 86 2008 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*81:630*17"2007"(045)=163.6 0351-3114 URN:NBN:SI:doc-562RXEMV 2310822 6206978 RAZ_Gricar_Jozica_i2008.pdf RAZ_Gricar_Jozica_i2008.pdf 1 409C0ACF1DDBE32DAB84DAE6E8B35E07 3fdedd299dec01a1b4d25dab5d70a47f002633dee7693fec228ea1f030e9b70d 23d31aa9-17b5-11ed-b6b8-001a4af901a5 20.500.12556/dirros/54d7925d-1d91-4fa9-9070-66c540679e1c https://dirros.openscience.si/Dokument.php?lang=slv&id=9566 Gozdarski inštitut Slovenije Acta Silvae et Ligni 0 0 0