THE EFFECT OF RAINFALL ON THE LATE WOOD OF SCOTS PINE AND OTHER CONIFERS IN EAST ANGLIA

1955 ◽  
Vol 28 (2) ◽  
pp. 136-140 ◽  
Author(s):  
E. H. M. HARRIS
Keyword(s):  
Scots Pine ◽  
East Anglia ◽  
Late Wood

A Comparison of Evaporation from Stands of Scots Pine and Corsican Pine in Thetford Chase, East Anglia

1982 ◽  
Vol 19 (3) ◽  
pp. 859 ◽  
Author(s):  
John Roberts ◽  
Rona M. Pitman ◽  
J. S. Wallace
Keyword(s):  
Scots Pine ◽  
East Anglia

scholarly journals Expression of three phenylpropanoid pathway genes in Scots pine (Pinus sylvestris L.) in open-pollinated families with differing relative wood densities during early and late wood formation

2015 ◽  
Vol 64 (1-6) ◽  
pp. 148-159 ◽  
Author(s):  
K. Kanberga-Silina ◽  
A. Jansons ◽  
Dainis Rungis
Keyword(s):  
Gene Expression ◽  
Wood Density ◽  
Scots Pine ◽  
Lignin Content ◽  
Lignin Biosynthesis ◽  
Wood Formation ◽  
Phenylpropanoid Pathway ◽  
Structural Development ◽  
Late Wood ◽  
Forestry Production

Abstract Wood volume and quality are the most important aspects of commercial forestry production, and studies of wood formation are important in order to increase the value and efficiency of forestry production. The phenylpropanoid pathway produces various compounds with diverse functions both for plant defence against biotic and abiotic stress as well as structural development. One of the main roles is monolignol production for lignin biosynthesis, which is a crucial aspect of wood formation. For this study three candidate genes involved in lignin biosynthesis were selected: phenylalanine ammonialyase (PAL1), cinnamyl alcohol dehydrogenase (CAD) and cinnamoyl-CoA reductase (CCR). Candidate gene expression was analysed in selected individuals with high and low wood density from open-pollinated Scots pine families during early wood (EW) and late wood (LW) formation and correlation between expression of these genes, total lignin content, and wood density was determined. Wood density values for analysed trees were similar within tree families but differed significantly between families with high and low wood density (p=1,06E-20). Wood density was slightly negatively correlated with lignin content (r=-0.36, p=0.038), but only in individuals in the high density wood group. In trees with low wood density, expression of the CAD gene was significantly lower in late wood formation compared to early wood (p=0.00179). In trees with high wood density, expression of the PAL1 gene was five times higher during early wood formation compared to late wood formation. A positive correlation was detected between PAL1 and CCR gene expression during early wood formation (r=0.804) and late wood formation (r=0.466).

scholarly journals Connection between the percentage of late wood and wood density in Scots pine from the southern taiga zone of the European part of Russia

10.12737/3340 ◽  
2014 ◽  
Vol 4 (1) ◽  
pp. 21-26
Author(s):  
Киселева ◽  
Aleksandra Kiseleva ◽  
Хван ◽  
Yuriy Khvan
Keyword(s):  
Environmental Factors ◽  
Scots Pine ◽  
Southern Taiga ◽  
European Part ◽  
Pine Forest ◽  
Taiga Zone ◽  
Late Wood ◽  
European Part Of Russia ◽  
Growing Conditions ◽  
Southern Taiga Zone

There is a relationship between the properties of wood. Percentage of late wood – wood macrostructure characterization is a definite relation to density. This relationship varies slightly depending on the species and environmental factors. Establishment of interrelation of these parameters for wood from different regions and growing conditions, will more accurately judge the quality indicators of wood in specific circumstances. The studies were conducted with a timber of Scots pine growing in the Vologda region. In Ustyuzhansky Forestry two sites differing in conditions of growth are selected - lichen pine forest and blueberry and cranberry pine forest.

scholarly journals INFLUENCE OF THE ENVIRONMENTAL POLLUTION ON THE DISTRIBUTION AND POLYMERIZATION DEGREE OF CELLULOSE IN BARK AND WOOD FROM SCOTS PINE (PINUS SYLVESTRIS L.) STEM

Wood Research ◽  
2021 ◽  
Vol 66 (2) ◽  
pp. 203-210
Author(s):  
Donata Krutul ◽  
Andrzej Radomski ◽  
Andrzej Antczak ◽  
Michał Drożdżek ◽  
Teresa Kłosińska ◽  
...  
Keyword(s):  
Pinus Sylvestris ◽  
Environmental Pollution ◽  
Scots Pine ◽  
Longitudinal Section ◽  
Middle Part ◽  
Cellulose Content ◽  
Polymerization Degree ◽  
Late Wood ◽  
Degradation Degree

The pine stems were cut from three different polluted environments – Ist trees degradation degree (weak pollution), IInd trees degradation degree (strong pollution) and IIIrd trees degradation degree (connected with very strong pollution). On the basis of obtained results it was stated that environmental pollution caused changes in late wood participation, as well as distribution of cellulose on the stem cross- and longitudinal section. It also changed cellulose content in bark from the butt-end section, which was about 26% regardless the degradation degree. The environmental pollution caused also an increase of viscometric average polymerization degree of cellulose in heartwood in relation to heartwood adjacent sapwood and sapwood from butt-end section. Regardless the degradation degree, cellulose polymerization degree in heartwood adjacent sapwood from the middle part of the stem was higher in comparison to sapwood and heartwood. Moreover, the environmental pollution caused the increase of viscometric average polymerization degree of cellulose in bark. The polymerization degree of cellulose in bark from the butt-end section of IIIrd degradation degree stems was 22% and 23% higher in comparison to the Ist and IInd degradation degree.

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