Diferenciacija terminalnih traheid kasnega lesa pri navadni jelki v dormantnem obdobju

Gričar, Jožica (author), Čufar, Katarina (author), Schmitt, Uwe (author)

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
• Typology: 1.01 - Original Scientific Article
• Organization: BF - Biotechnical Faculty
• Publisher: Zveza lesarjev Slovenije: GZS, Združenje lesarstva
• Year: 2003
• Number of pages: Str. 412-415
• Numbering: Let. 55, št. 12
• PID: 20.500.12556/RUL-62122
• UDC: 630
• ISSN on article: 0024-1067
• COBISS.SI-ID: 1120137
• Publication date in RUL: 10.07.2015

Record is a part of a journal

• Title: Les
• Shortened title: Les
• Publisher: Zveza društev inženirjev in tehnikov gozdarstva in lesarstva Slovenije, Zveza društev inženirjev in tehnikov gozdarstva in lesarstva Slovenije, Biotehniška fakulteta, Oddelek za lesarstvo, Založba Univerze, Biotehniška fakulteta, Oddelek za lesarstvo, Založba Univerze
• ISSN: 0024-1067
• COBISS.SI-ID: 13940224

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