BF, Oddelek za lesarstvo, Ljubljana (BFLES)
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Effect of Local Heating and Cooling on Cambial Activity and Cell Differentiation in the Stem of Norway Spruce (Picea abies)Gričar, Jožica, 1978- ...The effect of heating and cooling on cambial activity and cell differentiation in part of the stem of Norway spruce (Picea abies) was investigated. A heating experiment (23-25 °C) was carried out in ... spring, before normal reactivation of the cambium, and cooling (9-11 °C) at the height of cambial activity in summer. The cambium, xylem and phloem were investigated by means of light- and transmission electron microscopy and UV-microspectrophotometry in tissues sampled from living trees. Localized heating for 10 d initiated cambial divisions on the phloem side and after 20 d also on the xylem side. In a control tree, regular cambial activity started after 30 d. In the heat-treatedsample, up to 15 earlywood cells undergoing differentiation were found to be present. The response of the cambium to stem cooling was less pronounced, and no anatomical differences were detected between the control and cool-treated samples after 10 or 20 d. After 30 d, latewood started to form in the sample exposed to cooling. In addition, almost no radially expanding tracheids were observed and the cambium consisted of only five layers of cells. Low temperatures reduced cambial activity, as indicated by the decreased proportion of latewood. On the phloem side, no alterations were observed among cool-treated and non-treated samples. Heating and cooling can influence cambial activity and cell differentiation in Norway spruce. However,at the ultrastructural and topochemical levels, no changes were observed in the pattern of secondary cell-wall formation and lignification or in lignin structure, respectively.Vir: Annals of Botany. - ISSN 0305-7364 (Vol. 97, no. 6, 2006, str. 943-951)Vrsta gradiva - članek, sestavni delLeto - 2006Jezik - angleškiCOBISS.SI-ID - 1415561
Avtor
Gričar, Jožica, 1978- |
Zupančič, Martin, 1962- |
Čufar, Katarina |
Koch, Gerald |
Schmitt, Uwe |
Oven, Primož
Teme
navadna smreka |
Picea abies |
kambij |
ksilem |
floem |
celična diferenciacija |
ogrevanje |
hlajenje |
svetlobna mikroskopija |
transmisijska elektronska mikroskopija |
UV-mikrospektrofotometrija
Vnos na polico
Trajna povezava
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Faktor vpliva
Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Gričar, Jožica, 1978- | 22609 |
Zupančič, Martin, 1962- | 10118 |
Čufar, Katarina | 02937 |
Koch, Gerald | |
Schmitt, Uwe | |
Oven, Primož | 11223 |
Vir: Osebne bibliografije
in: SICRIS
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