Microfibril Angle Characteristics of Korean Pine Trees from Depending on Provinces

KIM, Ji-Yeol; KIM, Soo-Chul; KIM, Byung-Ro

doi:10.5658/wood.2020.48.4.569

Cited by 11 publications

(3 citation statements)

References 13 publications

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“…In 70-year-old teak trees in East Timor, the average proportion of stands' heartwood was ± 40% higher than the findings in this study (Miranda et al, 2011). This discrepancy was presumably caused by various influences, i.e., differences in the growth rate, type of stands, characteristics of the individual tree, age, genotype, topography, and site quality (Huh et al, 2020;Kim et al, 2020aKim et al, , 2020bPinto et al, 2004).…”

Section: Discussioncontrasting

confidence: 66%

Wood Physical and Mechanical Properties of Clonal Teak (Tectona grandis) Stands Under Different Thinning and Pruning Intensity Levels Planted in Java, Indonesia

SETA¹,

Hidayati²,

Widiyatno³

et al. 2023

J. Korean Wood Sci. Technol.

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The objective of this study was to reveal the impact of thinning and pruning regimes on the physical and mechanical properties of clonal teak wood planted in Java. In this study, a 15-year-old clonal teak plantation was carried out and the obtained data were evaluated with analysis of variance (ANOVA). The results showed that different thinning intensities had a significant impact on the alteration of heartwood volume development (F = 25.63; p < 0.0001). Meanwhile, the impact of different thinning treatments in several physical properties depends on the pruning treatment levels [moisture content (F = 12.18, p < 0.0001); tangential shrinkage (F = 15.60, p < 0.0001); T/R ratio (F = 7.17, p < 0.0001); and volumetric shrinkage (F = 10.81, p < 0.0001)]. However, different thinning intensities had no significant impact on wood basic density alteration (F = 0.72, p = 0.486), while pruning intensities affect the differences between radial (F = 3.52, p = 0.030) and volumetric shrinkage (F = 3.13, p = 0.044). In mechanical properties, thinning intensity levels did not promote any significant differences [modulus of elasticity (F = 1.41, p = 0.248); modulus of rupture (F = 0.94, p = 0.392); compressive strength parallel to grain (F = 0.21, p = 0.813); and compressive strength perpendicular to the grain (F = 0.41, p = 0.669)]. Meanwhile, different pruning treatments and combination treatments were not significantly altered all mechanical properties. These results indicated that the thinning and pruning regimes can enhance the mechanical properties without having a serious alteration in the physical properties of clonal teak wood.

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Section: Discussioncontrasting

confidence: 66%

Wood Physical and Mechanical Properties of Clonal Teak (Tectona grandis) Stands Under Different Thinning and Pruning Intensity Levels Planted in Java, Indonesia

SETA¹,

Hidayati²,

Widiyatno³

et al. 2023

J. Korean Wood Sci. Technol.

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“…Ramburan et al (2011) reported clay is generally considered an important site factor causing variation in cultivar responses in the interaction genotype by environment. However, in other species Lee et al (2022) reported that the growth of Pinus densiflora conditions were found to have a significant effect in the relationship between the annual ring growth and climate also in Korean Pine was significant different between microfibil angle with climate (Kim et al, 2020). tereticornis clones planted in southern China were 0.91 for tree diameter and heigth, as well as 0.87 for basic density (Yang et al, 2018).…”

Section: Growth Characteristics and Basic Densitymentioning

confidence: 95%

Evaluation of Genetic Parameters of Growth Characteristics and Basic Density of Eucalyptus pellita Clones Planted at Two Different Sites in East Kalimantan, Indonesia

FADWATI,

HIDAYATI,

NA’IEM

2023

J. Korean Wood Sci. Technol.

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Eucalyptus pellita is one of the fast-growing tree species and has become predominant in Indonesian forest plantations. Meanwhile, tree breeding programs with clone development are the best way to provide greater genetic advantages. A better understanding of genetic control on growth and basic density in E. pellita is important for increasing wood productivity and quality. In this study, growth characteristics (tree height, diameter, and volume), basic density and its genetic parameters (heritability, genetic gain and genetic correlation) were determined. The number of clones tested in both trials was 50, divided into 5 blocks, and 5 trees/plot. The results showed that there were significant differences in growth and basic density among clones. There was an interaction between genetics and the environment further indicating the existence of unstable clones. The high heritability was found in tree height (0.82-0.86), diameter (0.82-0.90), and basic density (0.91-0.93). This implies that E. pellita has good opportunities for genetic improvement to increase wood productivity and quality. In addition, the results of genetic correlations among growth characteristics (height, diameter, and volume) and basic density showed positive moderate to highly significant value. It is suggested that these characters may be used to the advantage of the breeder for bringing improvement in these traits simultaneously. Therefore, this study provides important information of the genetic improvement of wood quality in E. pellita in Indonesia.

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“…), pitch pines (P. rigida Mill), Keumkang pines (P. densiflora for. erecta), and sea pines (P. thunbergii) [19,20]. A substantial number of secondary metabolites such as terpenoids, phenolics, cinnamic acids, carboxylic acids, fatty acids, and flavonoids are present in pine needles [21].…”

Section: Introductionmentioning

confidence: 99%

In Vitro Fermentation Characteristics of Pine Needles (Pinus densiflora) as Feed Additive

et al. 2023

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In this study, the fermentation characteristics of pine needles were investigated for the first time and the possibility of using them as plant-derived feed additives was confirmed. Four types of fermented pine needle were prepared: (1) natural fermentation (CON); (2) Lactobacillus plantarum SK4315 fermentation (LPF); (3) Saccharomyces cerevisiae SK3587 fermentation (SCF); and (4) co-culture fermentation (CCF). Fermentation lasted 48 h, and samples were taken at 4-h intervals until 12 h, then at 24 and 48 h. As analysis items, fermentation characteristics, antibacterial, antioxidant, and enzymatic activities were investigated. As a result, all pine needle cultures were fermented with changes in the number of viable cells and pH. LPF inhibited the growth of the most pathogens, and the activity became stronger with fermentation. Total polyphenol content (TPC) was the highest in the 48 h SCF and LPF samples, ABTS radical scavenging ability and intracellular antioxidant activity were higher in SCF. Enzymatic activities were different depending on each pine needle culture medium and the fermentation time. In summary, all pine needle cultures were normally fermented, and as fermentation progressed, LPF strengthened antibacterial activity and SCF strengthened antioxidant activity. This study confirmed the potential of fermented pine needles as a feed additive, showing an enhancement of biological activity.

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Microfibril Angle Characteristics of Korean Pine Trees from Depending on Provinces

Cited by 11 publications

References 13 publications

Wood Physical and Mechanical Properties of Clonal Teak (Tectona grandis) Stands Under Different Thinning and Pruning Intensity Levels Planted in Java, Indonesia

Wood Physical and Mechanical Properties of Clonal Teak (Tectona grandis) Stands Under Different Thinning and Pruning Intensity Levels Planted in Java, Indonesia

Evaluation of Genetic Parameters of Growth Characteristics and Basic Density of Eucalyptus pellita Clones Planted at Two Different Sites in East Kalimantan, Indonesia

In Vitro Fermentation Characteristics of Pine Needles (Pinus densiflora) as Feed Additive

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