The quality of scots pine pollen (Pinus sylvestris L.) in the emission area of JSC «Karabashmed»

2021 ◽  
Author(s):  
S. G. Makhniova ◽  
P. E. Mohnachev
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Emission Area ◽  
Pine Pollen

scholarly journals The Technical Quality of Wood of Scots Pine (<em>Pinus sylvestris </em>L.) of Diverse Genetic Origin

2020 ◽  
Author(s):  
Eliza Konofalska ◽  
Hubert Lachowicz ◽  
Paweł Kozakiewicz ◽  
Włodzimierz Buraczyk
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Technical Quality ◽  
Genetic Origin

The importance of being the first pollen in the strobili of Scots pine

2008 ◽  
Vol 38 (12) ◽  
pp. 2976-2980 ◽  
Author(s):  
Saila Varis ◽  
Arja Santanen ◽  
Anne Pakkanen ◽  
Pertti Pulkkinen
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Pollen Grains ◽  
Seed Orchard ◽  
Pollen Grain ◽  
Seed Orchards ◽  
Pollination Experiments ◽  
Seed Crop ◽  
Pollen Types ◽  
Pine Pollen

Timing of pollen arrival may affect the level of seeds fertilized by pollen from outside seed orchards, especially in seed orchards of Scots pine ( Pinus sylvestris L.) established in southern Finland with stock from northern populations. We performed sequential pollination experiments with Scots pine pollen collected from seed orchard clones originating from southern and northern Finland and recipient strobili in clones originating from southern Finland. When southern pollen was introduced first, seeds were sired equally by northern and southern genotypes. When northern pollen was introduced first, northern genotypes were found in 75% of the resulting seeds. When both pollen types were introduced at the same time, the resulting seed crop was split almost equally between northern and southern genotypes. These results do not unconditionally support the idea that the first pollen grain in the pollen chamber always fertilizes the ovum; instead, they suggest a more complex way of competition between pollen grains.

scholarly journals Are clearcut borders an effective tool for Scots pine (Pinus sylvestris L.) natural regeneration?

2018 ◽  
Vol 27 (2) ◽  
pp. e010
Author(s):  
Lukáš Bílek ◽  
Zdeněk Vacek ◽  
Stanislav Vacek ◽  
Daniel Bulušek ◽  
Rostislav Linda ◽  
...  
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Natural Regeneration ◽  
Pearson Correlation ◽  
Pair Correlation ◽  
Forest Edge ◽  
Horizontal Structure ◽  
Study Sites ◽  
The Relationship

Aim of the study: To describe the effect of stand edge after clearcut on the process of Scots pine (Pinus sylvestris L.) natural regeneration along the edge-to-interior gradient. The density, height, horizontal structure and quality of natural regeneration was evaluated.Area of the study: Kokořínsko Protected Landscape Area, Northern Bohemia (Czech Republic). The study sites naturally host Scots pine Pinetum oligotrophicum with cover of Vaccinium myrtillus L. and Vaccinium vitis-idaea L. in the herbal storey.Material and methods: Two 40 × 40 m permanent research plots were situated at the forest edge, two adjacent plots were established within the forest stand as control plots. Differences in regeneration characteristics were tested by analysis of variance (ANOVA) followed by the Tukey HSD test. Interactions between regeneration characteristics and the distance from the edge were evaluated by Pearson correlation. The relationship between the top storey and natural regeneration was depicted by pair-correlation function. Principal components analysis was carried out to assess overall data structure.Main results: Generally, the further from the stand edge, the lower natural regeneration density (r ≤ -0.64, p<0.001), mean height (r ≤ -0.54, p<0.001) and the best-quality promising individuals (r = -0.40, p<0.05) were found, whereas significant influence on overall average pine quality was not observed. The highest regeneration density (15,250 pcs/ha) was reached at a distance of 5-10 m from the stand edge.Research highlights: The forest edge interior can become favourable location for natural regeneration and can be implemented into traditional regeneration approaches in pine regions.

scholarly journals Influence of machining technologies and quality of logs on material losses of typical supply of Scots pine wood (Pinus sylvestris L.) destined for layered floorboards

2018 ◽  
Vol 60 (4) ◽  
pp. 241-247 ◽  
Author(s):  
Paweł Kozakiewicz ◽  
Bartłomiej Rębkowski ◽  
Grzegorz Koczan ◽  
Sławomir Krzosek
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Solid Wood ◽  
Point Of View ◽  
Total Loss ◽  
Pine Wood ◽  
Flooring Material

Abstract Pine wood is commonly used in the production of floorings and is mainly used for solid wood planks and as a base in multi-layer flooring material. From an economic and ecological point of view, flaws such as flattening or heartwood ratio are very important when buying material for production. 40 logs of Scots pine (Pinus sylvestris L.) have been selected from wood deposit, from typical wood delivery. The ratios of sapwood and heartwood have been quantified, as well as eccentricity and flattening, in order to determine the suitability of the selected material for processing into floorings. There are two existing methods of log processing: sawing and peripheral cutting. Sawing is the most common one and widely used, although peripheral cutting could be more effective, especially for production of base in multi-layer floorings. The total loss volume for the two methods of manipulation and processing have been calculated. First one is sawing in accordance to schematics used in the sawmill of one of the largest producers of multilayer floorings in Europe. Second one is peripheral cutting with three diameters of peeler roll. Total loss volume for sawing was 55.8 ± 10.5% and for peripheral cutting with peeler roll with biggest chosen diameter of 100 mm was 45.6 ± 9.5%. Therefore, in presented case, peripheral cutting is more efficient than sawing.

scholarly journals The influence of anthropogenic impact on the content of photosynthetic pigments in the annual conifer of Scots pine growing in the forest park zones of the city of Yelets

2021 ◽  
Vol 1 (43) ◽  
pp. 5-5
Author(s):  
Alexander Saakian ◽  
◽  
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Spectrophotometric Analysis ◽  
Urban Environments ◽  
Main Function ◽  
Forest Park ◽  
Forested Areas ◽  
Negative Factors ◽  
The City

Urban forested areas play an important role in maintaining a high quality of life in an urbanized society. They are assigned the main function in smoothing out negative factors of production and creating a favorable environmental environment. The growth and development of woody plants in urban environments often differs significantly from natural conditions. This factor is particularly acute in the work of the assimilation apparatus. The study of the content of pigments (chlorophylls a, b and carotenoids) in the annual conifer of scots pine (Pinus sylvestris L.) was determined in extracts using spectrophotometric analysis. As a result of the study, experimental data were obtained on changes in the pigment system in the coniferous pine needles with an increase in the level of contamination. The analysis of photosynthetic features of scots pine (Pinus sylvestris L.) in the studied forest park zones in the city of Yelets with a complex index of atmospheric pollution at the level of "low", showed minor differences in the sum Keywords: SCOTS PINE, CHLOROPHYLLS, CAROTENOIDS, INDUSTRIAL POLLUTION, LIPETSK REGION

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