Structural Variation of Tracheids in Norway Spruce (Picea abies [L.] Karst.)

Sarén, M.-P.; Serimaa, Ritva; Andersson, Seppo; Paakkari, T.; Saranpää, Pekka; Pesonen, Erkki

doi:10.1006/jsbi.2001.4434

Cited by 55 publications

(64 citation statements)

References 23 publications

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“…3b) even if it is less significant in comparison to the findings in loblolly and radiata pine [4,29]. However, the observed MfA values, with a mean of 11 • and a variation from 8 • to 20 • , indicates that the majority of wood measured has reached maturity in respect to MfA [26,41,42]. The boards were extracted between ring 4 and cambium, which varied to be 13-21 rings from pith.…”

Section: Correlationsmentioning

confidence: 92%

Variation in wood properties among five full-sib families of Norway spruce (Picea abies)

Steffenrem¹,

Saranpää²,

Lundqvist³

et al. 2007

Ann. For. Sci.

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-Genetic-and environmental variation and correlation patterns were characterized for modulus of elasticity (MOE), modulus of rupture (MOR) and related wood traits: latewood proportion, wood density, spiral grain, microfibril angle and lignin content in five full-sib families of Norway spruce. The families were evaluated on the basis of clearwood specimens from the juvenile -mature wood transition zone of 93 sampled trees at age 30 year from seed. Family-means varied significantly (p < 0.05) for all wood traits studied except lignin content. MOE varied between 7.9-14.1 GPa among trees and 9.4-11.0 GPa among families. MOR varied between 47-87 MPa among trees and 61-71 MPa among families. Families remained significantly different in an analysis of specific MOE (MOE/density) and MOR (MOR/density). Hence, solely relying on wood density as a wood quality trait in tree breeding would not fully yield the potential genetic gain for MOE and MOR. Correlations between wood structural traits and specific MOE and MOR are presented and discussed.

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Section: Correlationsmentioning

confidence: 92%

Variation in wood properties among five full-sib families of Norway spruce (Picea abies)

Steffenrem¹,

Saranpää²,

Lundqvist³

et al. 2007

Ann. For. Sci.

Self Cite

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“…The studies have demonstrated that the length of tracheids is considerably variable. The length is affected by the kind of wood, site and climatic conditions, position along the stem radius and height and position in an annual ring (GRYC, HORÁČEK 2003;SARÉN et. al.…”

Section: Discussionmentioning

confidence: 99%

“…The models are fully consistent with existing results of many authors presenting their results in the form of 2D diagrams. In studying the effect of the stem radius it is evident that the length of a tracheid in annual rings in the proximity of the stem pith shows an intensive increase in length (SARÉN et al 2001;YANG, HAZENBERG 1994;SETH, AGRAWAL 1984). In next years, a gradual increase in the length of tracheids is demonstrated.…”

Section: Discussionmentioning

confidence: 99%

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Effect of the position in a stem on the length of tracheids in spruce (Picea abies [L.] Karst.) with the occurrence of reaction wood

Gryc¹,

Horáček²

2005

J. For. Sci.

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The paper was aimed at the determination of variability of tracheid dimensions in spruce wood in relation to the position in a spruce stem. Significant changes in dimensions were found in early-wood and late-wood tracheids along the stem length and radius. There were statistically significant differences (variability along the radius) between particular annual rings. The height of 22 m showed statistically significant differences as compared with other heights (variability along the height). Differences between the length of early-wood and late-wood tracheids were not corroborated in zones CW, OW and SWL. Only in the SWP zone, statistically significant differences were found. Data sets (early-wood and late-wood tracheids) from the CW zone showed statistically significant differences as compared with other zones. On the basis of the results obtained, 3D models were created (for CW, OW, SWL and SWP zones; models for an early-wood and late-wood tracheid) describing changes in tracheid dimensions in spruce in relation to the position in a stem. In the models, the length of tracheids decreases with the height of a stem and on the other hand, with an increasing distance from the stem pith the length of tracheids increases. The importance of the paper consists in the enlargement of findings on the structure of spruce wood. In addition to this, the paper can contribute to the partial explanation of the different behaviour of physical and mechanical properties of wood in particular parts of the spruce stem.

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“…Peura et al (2005Peura et al ( , 2008aPeura et al ( , 2008b and Sarén et al (2001) found that MFA distributions both within single cells and across cells in a growth ring are right-skewed.…”

Section: Problems With Several Variance Approach Approximationsmentioning

confidence: 99%

Concerns about a variance approach to the X-ray diffractometric estimation of microfibril angle in wood

Verrill¹,

Kretschmann²,

Herian³

et al. 2010

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Abstract. In this article, we raise three technical concerns about Evans' 1999 Appita Journal "variance approach" to estimating microfibril angle (MFA). The first concern is associated with the approximation of the variance of an X-ray intensity half-profile by a function of the MFA and the natural variability of the MFA. The second concern is associated with the approximation of the natural variability of the MFA by a function of the MFA. The third concern is associated with the fact that the variance approach was not designed to handle tilt in the fiber orientation. All three concerns are associated with potential biases in MFA estimates. We raise these three concerns so that other researchers interested in understanding, implementing, or extending the variance approach or in comparing the approach to other methods of estimating MFA will be aware of them.

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Structural Variation of Tracheids in Norway Spruce (Picea abies [L.] Karst.)

Cited by 55 publications

References 23 publications

Variation in wood properties among five full-sib families of Norway spruce (Picea abies)

Variation in wood properties among five full-sib families of Norway spruce (Picea abies)

Effect of the position in a stem on the length of tracheids in spruce (Picea abies [L.] Karst.) with the occurrence of reaction wood

Concerns about a variance approach to the X-ray diffractometric estimation of microfibril angle in wood

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