2 edition of Variation in tracheid length in Picea sitchensis Carr. found in the catalog.
Variation in tracheid length in Picea sitchensis Carr.
J. M. Dinwoodie
Bibliography: p. 48-49.
|Statement||by J. M. Dinwoodie.|
|Series||Special report - Forest Products Research ; no. 16|
|LC Classifications||SD433 .G7a no. 16, SD397.S56 .G7a no. 16|
|The Physical Object|
|Pagination||iv, 55 p. :|
|Number of Pages||55|
|LC Control Number||76379087|
The effect of selective breeding on juvenile wood formation in year-old Sitka spruce (Picea sitchensis (Bong.)Carr.) was investigated. Properties associated with juvenile wood in fast-growing progenies were compared with those from slow-growing progenies and an unimproved control of similar growth rate (origin Queen Charlotte Islands, British Columbia, Canada). Abstract. As part of a programme aimed at improving Sitka spruce timber (Picea sitchensis (Bong.) Carr.), a study has been made of the variation in some wood characteristics of significance in affecting technological behaviour, and the effect on these characteristics when trees of outstanding form and vigour are selected.
The influence of tracheid length and density in Sitka spruce upon wood properties has been demonstrated by several studies and it has been shown that there is a definite correlation between tracheid length and the tensile strength of paper. Wood density is the simplest index of the suitability of wood for many important uses. The effects of silvicultural treatments on tracheid length and wood. The relationships between foliage area and sapwood area between trees and within the crowns of 20 Piceasitchensis (Bong.) Carr., provenance Queen Charlotte Island, British Columbia (10 in a control plot and 10 in a plot fertilized with potassium and phosphorus 8 years before harvest) and 10 Pinuscontorta Dougl., provenance Ladysmith trees were examined using a physiological analysis based on.
Author of Timber, Wood, Timber, its structure, properties, and utilisation, Timber, its nature and behaviour, Waferboard and OSB, Variation in tracheid length in Picea sitchensis Carr. About Cookies, including instructions on how to turn off cookies if you wish to do so. By continuing to browse this site you agree to us using cookies as described in .
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Variation in tracheid length in Picea sitchensis Carr (Special report - Forest Products Research ; no. 16) [Dinwoodie, J. M] on *FREE* shipping on qualifying offers. Variation in tracheid length in Picea sitchensis Carr (Special report - Forest Products Research ; no.
16)Author: J. M Dinwoodie. Variation in tracheid length in Picea sitchensis Carr [J. Dinwoodie] on *FREE* shipping on qualifying : J. Dinwoodie. Buy Variation in Tracheid Length in Picea Sitchensis Carr (no) by Great Britain Forest Products Research Steering Committee (ISBN:) from Amazon's Book Store.
Everyday low prices and free delivery on eligible : Great Britain Forest Products Research Steering Committee. Abstract: Variation in tracheid lengths in reson ance wood of spruce (Picea abies L.). ts results Analysis of variance showed that the lo cation of an an nual ring in resonance wood has no.
Variation in tracheid length in Picea sitchensis Carr Author: Dinwoodie, J. Awarding Body: University of Aberdeen Current Institution: University of Aberdeen Date. Wood density and tracheid properties of Scots pine: responses to repeated fertilization and timing of the first commercial thinning.
Variation in density of Picea sitchensis in relation to within-tree trends in tracheid diameter and wall thickness. Forestry, Jan Journals & Books; Register Sign in. Sign L. Chalk, Tracheid length with special reference to Sitka spruce (Picea sitchensis C Carr)Forestry 4: () Chang and Ying-Pe, Chang, Ying-Pe, Bark structure of the North American conifers U.S.D.A.
Tech. Bull. () Chang, Chang, Anatomy of common North American pulp wood. AbstractA dynamic interrelationship exists among wood density and fiber traits (tracheid length and microfibril angel, MFA) and the ultimate wood strength properties.
Moreover, many of the basic fundamental wood attributes are heavily influenced by crown size and architecture. In an attempt to examine this interplay, we thoroughly characterized 60 interior spruce (Picea glauca × P. Picea sitchensis (Bong.)Carr. Sitka Spruce. Pinaceae -- Pine family.
Harris. Sitka spruce (Picea sitchensis), known also as tideland spruce, coast spruce, and yellow spruce, is the largest of the world's spruces and is one of the most prominent forest trees in stands along the northwest coast of North coastal species is seldom found far from tidewater, where moist maritime.
Sitka spruce (Picea sitchensis (Bong.) Carr) is native to the Pacific North West of America and was introduced to Western Europe in the early 19th nineteenth century. Radial pattern of variation in the first-formed earlywood tracheid length in blue pine shows that it increases outwards from the pith at first rapidly up to the 10th ring, then more slowly up to about the 40th ring and thereafter it remains more or less constant.
It is correlated significantly and positively with both age and distance from the pith up to 40 years. Tracheid length shows significant circumferential variation in whole-annual ring, whole-earlywood, whole-latewood and last-formed latewood. However, when the mean tracheid length of two opposite directions is compared with the mean tracheid length of eight cardinal directions in these sampling strata, then no significant difference is observed.
Tracheid length increased from pith to bark and from breast height to upper height. Juvenile wood (JW) was conical with the three models. At breast height, TA ranged from 11 to 27 years and JWP ranged from % to % across the three models. Summary. Changes in tracheid length during the development of primary and secondary xylem are analysed in relation to the division and elongation of cambial initials, in first year seedlings of Pinus sylvestris and Picea sitchensis.
During primary and early secondary growth tracheid length varies with leaf internode length, but this relationship soon becomes obscured during later secondary growth. Special Report No.
16, Variation in Tracheid Length in Picea sitchensis Carr, by Dr. Dinwoodie, is published by the Forest Products Research Laboratory at Princes Ris-borough under date of September In some 55 pages, including tables and graphs, its author traces trends of variation within trees, giving particular attention to effects on.
CHALK; TRACHEID LENGTH, WITH SPECIAL REFERENCE TO SITKA SPRUCE (PICEA SITCHENSIS CARR.), Forestry: An International Journal of Forest Research, Volume 4. The wood properties of Sitka spruce (Picea sitchensis) which influence its use in the production of sawn timber, veneer, particleboard, fibreboard, pulp and paper are gh the low strength properties of Sitka spruce restrict its use as constructional timber, it is highly suitable for the manufacture of particleboard and fibreboard and is an excellent pulping species.
(b) Variation in Tracheid Length outwards from the Pith at anyone level All investigations into this aspect of tracheid length have recorded the same general trend. Cell length in the ring nearest the pith is very short ( to l.5 millimetres on average in conifers), but. The influences of cambial age and ring width on density of Sitka spruce (Picea sitchensis (Bong.) Carr) were analysed in relation to within-tree trends in tracheid diameter and cell wall thickness.
Discs were sampled at breast height from a total of 24 trees, from seven stands at three contrasting sites in Wales, and at breast height, 30 per cent and 60 per cent total tree height from one of. It is expected that a warming climate will have an impact on the future productivity of European spruce forests.
In Scotland, Sitka spruce (Picea sitchensis (Bong.) Carr.) dominates the commercial forestry sector and there is growing pressure to develop alternative management strategies to limit potential economic losses through climate change.
References Anderson, E.A. Anderson, Tracheid length variation in conifers as related to distance from the pith J.
Forestry () Bailey and Shepard, I.W. Bailey, H.B. Shepard, Sanioâ€™s laws for the variation in size of conifer tracheids Bot. Gaz. () Bannan, M.W.
Bannan, Some factors influencing cell.Full Article. Variation of within-stem biometrical and physical property indices of wood from Cupressus sempervirens L.
Seyyed Khalil Hosseini Hashemi a, * and Behzad Kord b Variations in average tracheid dimensions (such as length, diameter, lumen diameter, and wall thickness) and its biometrical ratios including slenderness ratio, flexibility ratio, and Runkell ratio, oven-dry and basic.Two major aspects of Sitka spruce (Picea sitchensis (Bong.) Carr.) in coastal British Columbia were investigated: 1.
The factors which influence the management of the Species; 2. The quantification of the variability of naturally regenerated stands and plantations of the species. Factors analysed were natural distribution, ecological classification, the white pine weevil (Pissodes strobi Peck.