scholarly journals The effect of beetles on the dispersal stages of Bursaphelenchus mucronatus Mamiya & Enda (Nematoda: Aphelenchoididae) in wood chips of Pinus sylvestris L.

1992 ◽  
Vol 3 (4) ◽  
pp. 195-203 ◽  
Author(s):  
Jyrki Tomminen
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Close Contact ◽  
Wood Chips ◽  
Hylobius Abietis ◽  
The Third ◽  
Bursaphelenchus Mucronatus ◽  
Dispersal Stage ◽  
Pine Wood Chips ◽  
Acanthocinus Aedilis

The effect of the presence of beetle adults (Monochamus galloprovincialis, Acanthocinus aedilis, Rhagium inquisitor and Hylobius abietis) in Scots pine wood chips on the occurrence of the third (Lᵢᵢᵢ) and the fourth (Lᵢᵥ) dispersal stage of the nematode Bursaphelenchus mucronatus was studied. Possible infestation of the beetles with Lᵢᵥ of the nematode while being in close contact with the pine chips was also explored. Adults of M. galloprovincialis and A. aedilis contributed to B. mucronatus Lᵢ formation in the chips. Callow adults of M. galloprovincialis were more efficient elicitors of moulting of Lᵢᵢᵢ into Lᵢᵥ than emerged beetles of the same species. Only M. galloprovincialis adults became infested with Lᵢᵥ callow beetles containing more nematodes than emerged beetles.

scholarly journals Interpopulation genetic-ecological variation of Scots pine (Pinus sylvestris L.) in Serbia

Genetika ◽  
2011 ◽  
Vol 43 (1) ◽  
pp. 1-18 ◽  
Author(s):  
Aleksandar Lucic ◽  
Vasilije Isajev ◽  
Rade Cvjeticanin ◽  
Ljubinko Rakonjac ◽  
Marijana Novakovic ◽  
...  
Keyword(s):  
Cluster Analysis ◽  
Pinus Sylvestris ◽  
Plant Community ◽  
Plant Communities ◽  
Scots Pine ◽  
Seed Protein ◽  
Genetic Research ◽  
Community Research ◽  
Ecological Variation ◽  
The Third

The genetic-ecological variation of Scots pine (Pinus sylvestris L.) in Serbia was studied in the populations at five localities in western and south-western Serbia. Three groups of Scots pine (Pinus sylvestris L.) populations were differentiated based on genetic research (seed protein analysis) and plant community research. The first group consists of Scots pine populations on Sargan (FMU ?Sargan?) and on Tara (FMU ?Kaluderske Bare?), where the forests belong to the community of Scots pine and Austrian pine (Pinetum sylvestris-nigrae Pavlovic 1951). The second group covers the localities Stolovi (FMU ?Radocelo-Crepuljnik?) and Zlatar (FMU ?Zlatar I?), where the forests belong to the community of Scots pine and spruce (Piceo abietis-Pinetum sylvestris Stefanovic 1960). The third group comprises the Scots pine population on Pester (FMU ?Dubocica-Bare?) which belongs to the community of Scots pine with erica (Erico-Pinetum sylvestris Stefanovic 1963). Cluster analysis was performed on the basis of seed protein data and showed that there are three groups of Scots pine populations. The three populations coincide with plant communities. The community of Scots pine with erica (Erico-Pinetum sylvestris Stefanovic 1963) recorded on Pester at the locality ?Dubocica- Bare? in the area of FE ?Golija? Ivanjica, is a special Scots pine population displayed at the greatest distance from all other populations in the cluster analysis dendrogram.

scholarly journals X-ray Analysis of Biomass Wood Briquette Structure

2016 ◽  
Vol 20 (1) ◽  
pp. 147-154
Author(s):  
Kamil Krzysztof Roman ◽  
Adam Świętochowski
Keyword(s):  
Image Analysis ◽  
Pinus Sylvestris ◽  
Correlation Coefficient ◽  
Scots Pine ◽  
Vertical Axis ◽  
Wood Chips ◽  
X Ray

AbstractThe study aims to measure the wood chips flow during the briquetting process by the X-ray image analysis. Scots pine (Pinus sylvestris L.) constituted the used feedstock that has been previously divided, according to the standard, into four (>1.0; 1.1-4.0; 4.1-8.0; 8.1-16.0 mm) groups of fraction. Examination of the X-ray image allows description of the movement of the wood fractions flow after the briquetting process. The correlations between the vertical axis and scattering plane factors were estimated. The correlation coefficient was 0.973 and was almost complete. The calculations were made for the areas of deviations (SD) and the area of scattering planes (DPS). Particular flow irregularities were determined for deviations ranges of individual groups of fractions and were (>1.0)=3.04; (1.1-4.0)=4.08; (4.1-8.0)=6.33 and (8.1-16.0)=7.33 cm2, and for scattering planes they were accordingly e (>1.0)=0.32; (1.1-4.0)=0.72; (4.1-8.0)=0.97 and (8.1-16.0)=1.29 cm2.

scholarly journals Needle anatomy suggests hybridization between the relict turfosa form of Pinus sylvestris L. from the Gązwa peat bóg and typical Scots pine

2011 ◽  
Vol 78 (1) ◽  
pp. 29-36 ◽  
Author(s):  
Kornelia Polok ◽  
Marta Przybyła ◽  
Włodzimierz Pisarek ◽  
Ewa Chudzińska ◽  
Roman Zieliński ◽  
...  
Keyword(s):  
Pinus Sylvestris ◽  
Analysis Of Variance ◽  
Scots Pine ◽  
Multivariate Analyses ◽  
Descriptive Statistics ◽  
Hybrid Origin ◽  
Peat Bog ◽  
Needle Anatomy ◽  
The Third ◽  
Phenotypic Groups

The aim of this study was to characterize the turfosa form of <em>Pinus sylvestris</em> from the Gazwa peat bog reserve in terms of 16 anatomical needle traits and to determine whether pines with a typical morphotype inhabiting the peat bog have been so successful thanks to hybridization with the unique tufosa ecotype. Investigations were conducted on three phenotypic groups of Scots pine growing in the peat bog. The first two groups consisted of 30 tufosa trees at the age of 117-217 years and 20 trees at the age of 30-85 years. The third group consisted of typical pines represented by 10 trees at the age of 20-55 years. In total 30 trees of typical pine, surrounding the peat bog, at the age of 100-150 years served as outgroup. Descriptive statistics, analysis of variance with the F test, Tukey's test, and a number of multivariate analyses were used to estimate differences between the studied groups of trees based on 16 anatomical needle characteristics. The old turfosa form from the Gazwa reserve proved to be a unique and relict peat bog pine, as it was shown by the differences in 10 analyzed needle traits in comparison to pine with a typical morphotype growing in the areas surrounding the peat bog. The young typical pines have adapted to conditions found in the peat bog owing to hybridization with the turfosa forms. The young turfosa trees differed from the old turfosa trees and also they have probably been of a hybrid origin. The old turfosa form from the Gazwa reserve is a threatened ecotype due to its hybridization with pines from the population surrounding the peat bog.

scholarly journals Variation of morphological needle characters of Scots pine (Pinus sylvestris L.) populations in different habitats

2011 ◽  
Vol 72 (1) ◽  
pp. 37-44 ◽  
Author(s):  
Lech Urbaniak ◽  
Leszek Karliński ◽  
Remigiusz Popielarz
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Morphological Character ◽  
Pine Forest ◽  
Interindividual Variation ◽  
Needle Length ◽  
The Third ◽  
Edaphic Conditions ◽  
Flat Side ◽  
Character Correlations

We investigated the phenotypic variation of five morphological needle characters of Scots pine (<em>Pinus sylvestris</em> L.) in three populations. Two of the populations occurred in bogs and the third one formed a degraded fresh pine forest showing some features of a dry pine forest. The greatest variation was found in characters a (needle length), b and d, denoting the number of stomatal rows respectively on the convex and flat sides of the needle. Conversely, characters c and e (average number of stomata per 2 mm of needle length on the convex and the flat side of the needle) were stable, with little interindividual variation. The two bog populations and the dryland population exhibited different sets of character correlations. The interpopulation differentiational detected on the basis of morphological character expression was markedly influenced by both the different edaphic conditions, and the distinct genetic structure of the studied populations.

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