zhangwuensis and Pinus sylvestris var.
" Effect of foliar application of dilute sulphuric acid on Scots pine seedlings "
KW - PINUS SYLVESTRIS (SCOTS PINE)
Kroon, J., Andersson, B., and Mullin, T. J. (2008). “Genetic variation in the diameter-height relationship in Scots pine (Pinus sylvestris),” Canadian Journal of Forest Research 38(6), 1493-1503. DOI: 10.1139/X07-233
We monitored chamber fluxes of oxidized nitrogen in Scots pine shoots under field conditions, and changed from a NOy measurement to the more NOx-specific measurement.
Decline reasons of pure Pinus sylvestris var.
The variance analysis of the lignification markers discussed in Table 3 demonstrated the occurrence of statistically significant differences in (MFT/LC), and (MFN/LC), depending on the form of dead bark of the Scots pine.
Analyzing the values of (MFT/LC) and (MFN/LC), one should notice one particular element that special attention needs to be paid to the observed statistically significant diversification of values of both markers (MFT/LC, MFN/LC) depending on the form of dead bark analyzed in the paper. In both cases, statistically significant higher values of the markers were determined in the pines with ropy bark, while the lowest value was ascertained in the trees with scaly bark. A slightly higher value of both markers was determined in the trees with shell-type bark, while in the case of the pines with scaly bark and shell-type bark, no significant difference was determined between the values of both markers taken into consideration. It seemed that the differentiation of both markers (MFT/LC and MFN/LC) in the pines characterized by different forms of dead bark were connected with physiological, physical, and structural conditioning of water transportation with mineral salts in the stems of P. sylvestris. The trees with ropy bark possessed the highest values of the analyzed markers (MFT/LC) and (MFN/LC). Their mean value equaled 215.9 (g/mg/g) and 138.6 (g/mg/g), respectively. Conversely, it seems that it was the result of markedly larger fresh-needled twigs mass, higher conifer needles mass of these trees, and smaller lignin content in the tracheid walls of the circumferential zone (Jelonek et al. 2009b). It also seemed that the noted values of both markers were determined by a reduced intensity of the assimilation and transpiration processes. Due to this, it possibly resulted in a reduced efficiency of water transportation. The pines with the scaly and shell-type dead bark formed with smaller crowns more intensively assimilated and transpired. Because of this, the efficiency of water transportation in the xylem must have been significantly (p i.e., inside the tracheidal elements, which achieve a very high absolute value (Zimmermann 1966). For these reasons, a statistically significant higher lignin content was determined in the tracheid walls of the circumferential zone of the pines’ stem with the scaly and shell-type forms of dead bark than in the trees with ropy bark. The results published by Jelonek et al. (2009a) were a confirmation of this principle pertaining to the subject matter. To be more specific, it pertained to the lignin content in the tracheid walls of the pines with varied forms of dead bark from timber forests.
Decline of Pinus sylvestris var.
Pazdrowski, W., Jelonek, T., Arasimowicz-Jelonek, M., and Tomczak, A. (2016). “The form of dead bark in Scots pine (Pinus sylvestris L.) and selected biometric features and indicators,” Annals of Warsaw University of Life Sciences-SGGW Forestry and Wood Technology 95, 12-19.
Kim, J. S., and Daniel, G. (2014). “Distributional variation of lignin and non-cellulosic polysaccharide epitopes in different pit membranes of Scots pine and Norway spruce seedlings,” IAWA Journal 35(4), 407-429.
Products of photosynthesis in Pinus sylvestris. - …
Pinus sylvestris and Salix dasyclados, ..
In this study, we analysed the seasonal changes in wax reflectance of Scots pine needles.
on photosynthesis in Scots pine (Pinus sylvestris).
Genotypic variation among native Scots Pine populations in Scotland based on monoterpene analysis.
GROWTH AND PHOTOSYNTHESIS OF PINUS-SYLVESTRIS …
Relationship between net photosynthesis and nitrogen in Scots pine: ..
Scots pine (Pinus sylvestris) – Rune Kyrdalen ..
Lignin is a three-dimensional polymer of phenylpropane derivatives. It contributes to the decreasing (limiting) the swelling of the walls for the anatomical elements of wood and to the increase in resistance to microorganism activity (Austin and Ballaré 2010; Shmulsky and Jones 2011). The lignin polymerizes among the polysaccharide components of the wall. It appears after the growth of the cell ends, or after a given part of the cell wall’s growth ends. In dead cells, such as tracheids and vessels, the impregnation of the walls with lignin secures the polysaccharides of the wall against partial hydrolysis (Freudenberg 1959; Schubert 1965). The phylogenetic origin of plants determines different proportions of the three basic units in lignin, i.e., syringic, coniferyl, and p-coumaryl alcohol (Gibbs 1958; Boerjan et al. 2003; Vanholme et al. 2010). The lignin of the Scots pine (Pinus sylvestris (L.)) is composed of coniferyl units with a slight admixture of p-coumaryl and syringic units (De Stevens and Nord 1952). A common precursor of all derivatives of phenylpropane is shikimic acid (Neish 1964). The shikimic acid appears in small quantities as one of the first products of photosynthesis in Scots pine (Hasegawa 1962). By adding the radioactive shikimic acid to the callus tissue culture of Eastern white pine (Pinus strobus), Hasegawa et al. (1960) ascertained an efficient incorporation of this compound into lignin.
The lignin of the Scots pine (Pinus sylvestris ..
This study attempted to define the shaping of the quotient of fresh-needled twig mass and fresh conifer needle mass to the lignin content (MFT/LC) in the tracheid walls of the circumferential zone of trunks (MFN/LC) of pines with various forms of dead bark, which were called lignification markers. In the experiment, the researched trees had varying forms of dead bark, including ropy bark (G), scaly bark (L), and shell-type bark (M). The research material came from pine timber forests aged between 89 years to 91 years, located in Northern Poland. A tree tissue chemical analysis encompassed a zone of mature sapwood, i.e., the last ten annual growth rings of diameter increment located at the height of 1.30 m (diameter at breast height-DBH). The acquired results pointed to the fact that pines with dead bark in the ropy form possessed statistically higher values of the analyzed markers (MFT/LC and MFN/LC) than the trees with scaly and shell-type bark. The variances ascertained in the course of the experiments of both markers in the Scots pine (Pinus sylvestris (L.)) are possibly connected to the physiological, physical, and structural conditioning of water transportation, with mineral salts in the stem of the trees.
Scots Pine - 'Pinus sylvestris' Grow Wild
To reveal limiting steps during recovery from winter stress, the potential of photosynthesis to recover and the actual recovery outdoors during spring, were studied in Scots pine.
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