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Diferenciacija terminalnih traheid kasnega lesa pri navadni jelki v dormantnem obdobju
Gričar, Jožica (Author), Čufar, Katarina (Author), Schmitt, Uwe (Author)

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Abstract
Proučili smo diferenciacijo terminalnih traheid kasnega lesa v dormantnem obdobju pri 10 navidezno zdravih odraslih jelkah (Abies alba) s pomočjo svetlobne in transmisijske elektronske mikroskopije. Vzorci lesa in kambija so bili odvzeti iz živih dreves v oktobru, novembru in marcu. Kambijeva celična delitvena aktivnost se je pri vseh drevesih zaključila v oktobru, medtem ko je proces diferenciacije v najmlajših traheidah ob kambiju pri drevesih s širšimi branikami še vedno potekal. V novembru so bile pri vseh drevesih celične stene terminalnih traheid kasnega lesa dokončno oblikovane inlignificirane. Celična delitvena aktivnost kambija ter diferenciacija sta se pri drevesih s širšimi branikami zaključili kasneje kot pri drevesih z ožjimi branikami. V vseh proučenih drevesih se je proces diferenciacije v terminalnih traheidah kasnega lesa zaključil pred zimo.

Language:Slovenian
Keywords:navadna jelka, traheide kasnega lesa, celična stena, diferenciacija, lignifikacija, dormanca, svetlobna mikroskopija, transmisijska elektronska mikroskopija
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:BF - Biotechnical Faculty
Year:2003
Publisher:Zveza lesarjev Slovenije: GZS, Združenje lesarstva
Number of pages:str. 412-415
Numbering:Let. 55, št. 12
UDC:630
ISSN on article:0024-1067
COBISS.SI-ID:1120137 Link is opened in a new window
Views:372
Downloads:182
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Record is a part of a journal

Title:Les
Shortened title:Les
Publisher:Zveza društev inženirjev in tehnikov gozdarstva in lesarstva Slovenije
COBISS.SI-ID:13940224 This link opens in a new window

Secondary language

Language:English
Title:Differentiation of terminal latewood tracheids in silver fir during dormant period
Abstract:
The differentiation of terminal latewood tracheids of silver firs (Abies alba) was studied during dormant period. Samples of wood and cambium were taken from 10 apparently healthy mature trees in the middle of October, November and March. According to light microscopy and transmission electron microscopy, cambial cell-divisional activity was completed in all investigated trees in October, whereas process of differentiation was still ongoing in the youngest tracheids close to the cambium in trees with broader annual xylem growth rings. Cell wall formation and lignification of terminal latewood tracheids were completed in all trees in November. The cambial cell-divisional activity and also differentiation ended later in trees with broader annual xylem growth rings. However, differentiation of terminal latewood tracheids in all investigated trees was completed before winter.

Keywords:silver fir, latewood tracheids, cell wall, differentiation, lignification, dormancy, light microscopy, transmission electron microscopy

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