http://hdl.handle.net/20.500.12128/15471
Tytuł: | Mechanism of changes in grain inclination in wood produced by storeyed cambium |
Tytuł równoległy: | Mechanizm zmiany w nachyleniu wlóknistości drewna produkowanego przez kambium piętrowe |
Autor: | Hejnowicz, Zygmunt Zagórska-Marek, Beata |
Słowa kluczowe: | wood of Entandrophragma; cambium of Tilia |
Data wydania: | 1974 |
Źródło: | "Acta Societatis Botanicorum Poloniae" Vol. 43, no. 3 (1974) s. 381-398 |
Abstrakt: | The changes in cell orientation in the cambium of Entandrophragma producing wood with interlocked type of grain, and in the cambium of Tilia in a spirally girdled stem are traced through serial tangential sections of wood. In Entandrophragma the changes result from the intrusive growth of a fusiform cell whih repeatedly produces a new pointed tip from one side of the existing tip which disappears. This causes a sort of creeping of cell ends of one storey past those of the adjoining storey. The oppositely directed ends of the cells belonging to one storey creep in opposite directions so that the position of the cell centres remains constant and only the angle between the cells and the stem axis changes. The stratification of short rays in Entandrophragma represents an adaptation to the changes in celi orientation involved in the formation of interlocked grain. The mechanism of changes in grain inclination in Tilia is intermediate between that based on the creeping of cell ends and that based on pseudotransverse division and intrusive elongation which is known in non-storeyed cambia. |
URI: | http://hdl.handle.net/20.500.12128/15471 |
DOI: | 10.5586/asbp.1974.036 |
ISSN: | 2083-9480 0001-6977 |
Pojawia się w kolekcji: | Artykuły (WNP) |
Plik | Opis | Rozmiar | Format | |
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Hejnowicz_Mechanism_of_changes_in_grain_inclination.pdf | 7,19 MB | Adobe PDF | Przejrzyj / Otwórz |
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