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Growth and annual ring structure of Larix sibirica grown at different carbon dioxide concentrations and nutrient supply rates.
- Source :
- Tree Physiology; Oct2001, Vol. 21 Issue 16, p1223-1229, 7p, 1 Diagram, 2 Charts, 2 Graphs
- Publication Year :
- 2001
-
Abstract
- We compared effects of ambient (360 vpm) and elevated (720 vpm) carbon dioxide concentration ([CO2]) and high and low nutrient supply rates on stem growth, annual ring structure and tracheid anatomy of Siberian larch (Larix sibirica Ledeb.) seedlings over two growing seasons. Elevated [CO2] had no significant effect on either stem height or diameter growth; however, both stem height and diameter growth were enhanced by the high nutrient supply rate, and these increases were stimulated by elevated [CO2]. Elevated [CO2] tended to increase the width of the annual xylem ring, the number of cells in a radial file spanning the ring, and tracheid lumen diameter, whereas it tended to reduce cell wall thickness, although there were no statistically significant CO2 effects on tracheid anatomy. Changes in tracheid cell morphology seemed to be dependent on changes in shoot elongation rates. [ABSTRACT FROM PUBLISHER]
- Subjects :
- PLANT growth
CARBON dioxide
SIBERIAN larch
XYLEM
TRACHEARY cells
Subjects
Details
- Language :
- English
- ISSN :
- 0829318X
- Volume :
- 21
- Issue :
- 16
- Database :
- Complementary Index
- Journal :
- Tree Physiology
- Publication Type :
- Academic Journal
- Accession number :
- 51808435
- Full Text :
- https://doi.org/10.1093/treephys/21.16.1223