Results 71 to 80 of about 2,162 (162)

Chemical and structural changes during heartwood formation in Pinus sylvestris [PDF]

open access: yesForestry, 2003
Summary The aim of the present study was to describe the spatial distribution of some chemical and structural changes in the transition zone between sapwood and heartwood of Scots pine (Pinus sylvestris L.) in order to get a better understanding of heartwood formation.
openaire   +1 more source

Physico-mechanical properties of Spanish juniper wood considering the effect of heartwood formation and the presence of defects and imperfections

open access: yesForest Systems, 2014
Aim of study: Determining the main physical and mechanical properties of Spanish juniper wood from Soria (Spain) considering the effects of heartwood formation and the presence of defects and imperfections; and comparing the resulting characteristics ...
Javier de la Fuente-Leon   +4 more
doaj   +1 more source

Cell death of long-lived ray parenchyma cells during heartwood formation in trees

open access: yesJournal of Wood Science
Cell death plays an important role in the determination of secondary xylem cell functions. Tracheary elements (TEs), such as vessel elements and tracheids, lose their organelles due to rapid autolysis after the completion of secondary wall thickening and
Satoshi Nakaba, Ryo Funada
doaj   +1 more source

Narrow-sense heritability of heartwood variation in a teak (Tectona grandis) clonal trial and its potential for tree improvement

open access: yesForest Science and Technology
Teak (Tectona grandis L. f.) is a valuable tropical tree species renowned for its high-quality heartwood and excellent adaptability. Understanding the heritability of key traits such as growth characteristics and heartwood formation is essential for ...
Naoki Tani   +7 more
doaj   +1 more source

A Comparative Study of the Chemical Compositions of Heartwood and Sapwood in Erythrophleum fordii

open access: yesBioResources
The chemical composition, lignin structure, and extractive profiles of sapwood and heartwood were studied for 18-year-old Erythrophleum fordii trees to elucidate their chemical disparities and potential for high-value utilization.
Heng Liu   +7 more
doaj  

Comparative physiological, biochemical, metabolomic, and transcriptomic analyses reveal the formation mechanism of heartwood for Acacia melanoxylon

open access: yesBMC Plant Biology
Acacia melanoxylon is well known as a valuable commercial tree species owing to its high-quality heartwood (HW) products. However, the metabolism and regulatory mechanism of heartwood during wood development remain largely unclear.
Ruping Zhang   +6 more
doaj   +1 more source

Chemical composition and natural durability of juvenile and mature heartwood of Robinia pseudoacacia L.

open access: yesAnais da Academia Brasileira de Ciências, 2011
The aim of this study was to characterize the properties of juvenile and mature heartwood of Robinia pseudoacacia L. (black locust). The content, the composition, and subcellular localization of heartwood extractives were studied in 14 old-grown trees ...
João V.F Latorraca   +2 more
doaj  

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