Influence of progeny and initial stand density on growth and quality traits of 21 year old half-sib Scots pine (Pinus sylvestris L.)

Egbäck, Samuel; Liziniewicz, Mateusz; Högberg, Karl-Anders; Ekö, Per Magnus; Nilsson, Urban

doi:10.1016/j.foreco.2012.09.003

Cited by 15 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Different ramets of cloned genotypes may have various phenotypic performances in different microenvironmental conditions [46], which may lead to a certain amount of variation among trees within genotypes. Variation analysis helped to evaluate the magnitude of difference, and also to see if the difference was significant at the individual level, or at the level of the genotype, the blocks, and/or the interaction of blocks and genotypes [47].…”

Section: Discussionmentioning

confidence: 99%

Estimation of Genetic Parameters and Wood Yield Selection Index in a Clonal Trial of Korean Pine (Pinus koraiensis) in Northeastern China

2021

View full text Add to dashboard Cite

In order to determine suitable traits for selecting high-wood-yield Korean pine materials, eleven morphological characteristics (tree height, basal diameter, diameter at breast height, diameter at 3 meter height, stem straightness degree, crown breadth, crown height, branch angle, branch number per node, bark thickness, and stem volume) were investigated in a 38-year-old Korean pine clonal trial at Naozhi orchard. A statistical approach combining variance and regression analysis was used to extract appropriate traits for selecting elite clones. Results of variance analysis showed significant difference in variance sources in most of the traits, except for the stem straightness degree, which had a p-value of 0.94. Moderate to high coefficients of variation and clonal repeatability ranged from 10.73% to 35.45% and from 0.06% to 0.78%, respectively. Strong significant correlations on the phenotypic and genotypic levels were observed between the straightness traits and tree volume, but crown breadth was weakly correlated to the volume. Four principal components retaining up to 80% of the total variation were extracted, and stem volume, basal diameter, diameter at breast height, diameter at 3 meter height, tree height, and crown height displayed high correlation to these components (r ranged from 0.76 to 0.98). Based on the Type III sum of squares, tree height, diameter at breast height, and branch number showed significant information to explain the clonal variability based on stem volume. Using the extracted characteristics as the selection index, six clones (PK105, PK59, PK104, PK36, PK28, and K101) displayed the highest Qi values, with a selection rate of 5% corresponding to the genetic gain of 42.96% in stem volume. This study provides beneficial information for the selection of multiple traits for genetically improved genotypes of Korean pine.

show abstract

Section: Discussionmentioning

confidence: 99%

Estimation of Genetic Parameters and Wood Yield Selection Index in a Clonal Trial of Korean Pine (Pinus koraiensis) in Northeastern China

2021

View full text Add to dashboard Cite

show abstract

“…Bref., as well as abiotic factors such as frost. S. Egbäck's et al (2012) studies in 21 year old stands with three different levels of initial density (1,100, 2,500, 10,000 trees per hectare) indicate that the biggest height was reached in the stand where the initial density was 2,500 trees per hectare, but about a 14 % lower height was reached in stands with the initial density of 1,100 plants per hectare and even lower (7 %) -in stand with 10,000 trees per hectare. Basing on the above mentioned, the aim of the study was -to analyse Scots pine Pinus sylvestris L. height increment in young forest stands in Myrtillosa forest site type and to assess the impact of initial stand density and the health status impact on height increment of the trees.…”

Section: Introductionmentioning

confidence: 97%

Height Increment of Naturally Regenerated Young Forest Stands of Scots Pine Pinus Sylvestris L. In Myrtillosa Forest Site Type

Miezīte

Eglīte

Luguza

et al. 2015

Proceedings of the 7th International Scientific Conference Rural Development 2015

View full text Add to dashboard Cite

One of the most important stand productivity and competition indicators is height annual increment, which is affected by various factors such as soil preparation, initial density as well as various management risk factors. Empirical material for the research was collected in the northern part of Latvia. In four pure Scots pine stands in Myrtillosa forest site type 29 circular plots tree diameter, height and the last five years annual height increment was measured and visual state of health was described. The aim of this research is to analyse Scots pine height annual increment in naturally regenerated young forest stands in Myrtillosa site type forest stands and to give an evaluation of the impact of the initial stand density and the health status on height growth. The mean height increment in studied stands is 0.26 ± 0.009 m and the average periodical increment is 0.37 ± 0.042 m. The annual height increment has been in the height range from 0.23 to 0.53 m. Initial stand density affects the annual height increment significantly. In the stand with an initial density of 5770 ± 961 trees the height increment during the last five years has risen by 36%, but in stand with initial density of 12,650 ± 1,581 trees (P = 51.8 % and R = 6.0 %) the height increment during the five-years period has increased by only 12 %. The tree health status does not affect the tree height increment significantly.

show abstract

“…Hem kereste veriminin hem de kalitesinin, çarpık gövdelerden büyük ölçüde etkilendiği [13][14][15][16][17], düzgün olmayan gövdeler nedeniyle kereste biçme işleminde kabaca yüzde 10'luk değer kayıplarının olduğu belirtilmektedir [18]. Bununla birlikte, dikim aralığının gövde düzgünlüğü üzerindeki etkisi her zaman belirgin olmamasına rağmen, dar aralıklarla dikilen plantasyonlardaki ağaçların daha iyi gövde düzgünlüğü gösterdiği ve hacim iyileşmesini sağladığı literatürde belirtilmiştir [19][20][21][22][23]. Literatürdeki dikim aralığıyla ilgili çalışmaların genel olarak masif malzeme üzerinde yapıldığı tespit edilmiştir.…”

Section: Gi̇ri̇ş (Introduction)unclassified

Effect of Plantation Spacings on Some Technological Properties of Alder (Alnus glutinosa subsp. barbata (C.A. Mey.) Yalt.) Plywood

Aydın

Demir

Güdül³

2019

Politeknik Dergisi

View full text Add to dashboard Cite

show abstract

Influence of progeny and initial stand density on growth and quality traits of 21 year old half-sib Scots pine (Pinus sylvestris L.)

Cited by 15 publications

References 20 publications

Estimation of Genetic Parameters and Wood Yield Selection Index in a Clonal Trial of Korean Pine (Pinus koraiensis) in Northeastern China

Estimation of Genetic Parameters and Wood Yield Selection Index in a Clonal Trial of Korean Pine (Pinus koraiensis) in Northeastern China

Height Increment of Naturally Regenerated Young Forest Stands of Scots Pine Pinus Sylvestris L. In Myrtillosa Forest Site Type

Effect of Plantation Spacings on Some Technological Properties of Alder (Alnus glutinosa subsp. barbata (C.A. Mey.) Yalt.) Plywood

Contact Info

Product

Resources

About