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Projects / Programmes source: ARIS

Effect of experimentally controled heating and cooling of stem portion of oak (Quercus robur L.) and maple (Acer pseudoplatanus L.) on cambial activity and wood structure

Research activity

Code Science Field Subfield
4.01.00  Biotechnical sciences  Forestry, wood and paper technology   

Code Science Field
B430  Biomedical sciences  Sylviculture, forestry, forestry technology 
B270  Biomedical sciences  Plant ecology 
Keywords
oak, maple, wood formation, wood structure, cambium, fibres, temperature, light microscopy
Evaluation (rules)
source: COBISS
Researchers (1)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  22609  PhD Jožica Gričar  Forestry, wood and paper technology  Head  2007 - 2008  548 
Organisations (1)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0404  Slovenian Forestry Institute  Ljubljana  5051673000  12,253 
Abstract
Wood formation is influenced by internal and external factors. Annual xylem growth ring widths, structure and properties depend on dynamics and duration of individual phases of xylogenesis. Although oak (Quercus robur L.) and maple (Acer pseudoplatanus L.) are economically very important tree species in Slovenia, yet very little is known of their processes of wood formation and the effect of selected climatic factors on all these processes. The aim of the proposed project is to study the response of active and dormant cambium of oak and maple to experimentally increased (23-25°C) and decreased (9-11°C) temperature in both growing seasons. We will take intact samples of cambium, outer phloem and inner xylem from living trees at breast height at 21-day intervals. We will follow the xylem and phloem growth ring formation on permanent cross-sections for light microscopy and investigate the eventual alterations in the widths and anatomical structure of the growth rings. We will study transfer of the temperature along the stem from the site of its application. Results of the study will help to complete understanding about seasonal dynamics of the cambial cell divisional activity and individual phases of differentiation during one vegetation period in investigated tree species. Knowledge on the mechanisms that control process of xylogenesis is very important for basic and applied science. Results will be very useful for modelling in dendoecological and dendroclimatological studies. Biosynthetic and biochemical processes that occur in formation of lignocellulosic fibres determine the properties of wood. Detailed knowledge on the process of xylogenesis will contribute to the better understanding of the relations among structure, properties and end-use of wood.
Significance for science
Knowledge on the mechanisms that control process of xylogenesis is very important for basic and applied science. Results will be very useful for modelling in dendoecological and dendroclimatological studies. Biosynthetic and biochemical processes that occur in formation of lignocellulosic fibres determine the properties of wood. Detailed knowledge on the process of xylogenesis will contribute to the better understanding of the relations among structure, properties and end-use of wood.
Significance for the country
- understanding the extreme climate change impacts on forest ecosystems and production; - introduction of new methods and techniques, knowledge, cooperation and exchange of researchers with foreign universities and institutes; - transfer of knowledge to the Slovenian Forestry-Wood Technological Platform, Slovenian Forest Service, forestry associations and lay public
Most important scientific results Final report, complete report on dLib.si
Most important socioeconomically and culturally relevant results Final report, complete report on dLib.si
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