20.500.12556/RUL-152979 Anatomija ksilema in floema debel in korenin drevesnih vrst Populus sibirica in Ulmus pumila iz polsuhe stepe v Mongoliji Anatomy of xylem and phloem in stems and roots of Populus sibirica and Ulmus pumila from semi-arid steppe in Mongolia Raziskali smo kambij in anatomijo sekundarnih tkiv (ksilema - lesa in floema) sibirskega topola (Populus sibirica) in sibirskega bresta (Ulmus pumila) s plantaže v polsuhi stepi v Mongoliji. Tkivo za analize (mikro izvrtke) smo odvzeli iz debel in korenin dreves. Mikro izvrtke smo vklopili v parafin in z rotacijskim mikrotomom narezali preparate prečnih prerezov, ki smo jih obarvali z barviloma safranin in astra modro in pregledali pod svetlobnim mikroskopom. Rezultati predstavljajo anatomijo ksilema in floema debel in korenin obeh vrst. Posebno pozornost smo posvetili prikazu značilnosti najmlajših letnih prirastkov ksilema in floema. V razpravi poudarjamo kritične vidike metodologije odvzema, priprave mikro izvrtkov in anatomskih preparatov, ter potrebo po nadaljevanju raziskav nastajanja ter lastnosti lesa in floema manj znanih drevesnih vrst iz polsuhih okolij. The present study focuses on the cambium and the anatomy of secondary tissues (xylem – wood and phloem) of Siberian poplar (Populus sibirica) and Siberian elm (Ulmus pumila) grown in a plantation in the semi-arid Mongolian steppe. Stem and root microcores from both species were collected and subsequently processed to obtain cross-sections for light microscopy by paraffin embedding, sectioning with a rotary microtome, and staining with safranin and astra blue. The results present the anatomy of the secondary xylem and phloem of stems and roots of both species, along with the characteristics of the youngest xylem and phloem annual rings. We discuss the critical aspects which need to be considered when using the microcoring methodology, along with the need for further studies on wood and phloem formation of less-commonly studied tree species and their characteristics when grown in semi-arid environments. Populus sibirica sibirski topol sibirski brest Ulmus pumila kambij ksilem floem deblo korenina mikro izvrtek Siberian poplar Siberian elm cambium xylem phloem stem root microcore true false false Slovenski jezik Angleški jezik Članek v reviji 2023-12-13 13:06:58 2023-12-13 13:07:04 2024-04-24 09:54:33 0000-00-00 00:00:00 2023 0 0 Str. 37-48 št. 2 Let. 72 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*811.18:630*811.28 2590-9932 doi.org/10.26614/les-wood.2023.v72n02a02 176550403 RAZ_Dimitrova_Anastazija_2023.pdf RAZ_Dimitrova_Anastazija_2023.pdf 1 6EDEDE3D1C432AE5B30E34DBC74AA5AE 5ca471508c620a08a442853d62e5515d9ffad8eed04b77ebc0efab3cbea8192f 52882a07-99b0-11ee-9499-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=178742 https://journals.uni-lj.si/les-wood/article/view/14986 1 21f5ff6d-99b0-11ee-9499-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=178741 Biotehniška fakulteta Les 0 0 0