Results 11 to 20 of about 2,586,026 (293)

INFLUENCE OF PLANT SPACING ON THE BARK PROPERTIES OF A Eucalyptus CLONE [PDF]

open access: yesRevista Árvore, 2018
For several wood uses, such as pulp, paper and charcoal, the presence of the bark is undesirable, compromising production. Thus, this study aimed to evaluate the influence of different plant spacings on the properties of the bark of a clone of Eucalyptus
Maria Fernanda Vieira Rocha   +5 more
doaj   +3 more sources

Lignans from bark of the Olea plants. I.

open access: yesChemical and Pharmaceutical Bulletin, 1984
Four new lignans, (+)-1-acetoxypinoresinol [(1S, 2R, 5R, 6S)-1-acetoxy-2, 6-bis (4-hydroxy-3-methoxyphenyl)-3, 7-dioxabicyclo [3. 3. 0] octane] (1), (+)-1-hydroxypinoresinol (2), (+)-1-acetoxypinoresinol 4"-O-methyl ether (3) and (+)-1-hydroxypinoresinol 4"-O-methyl ether (4), and two known lignans, (-)-olivil (5) and (+)-cyclo-olivil (6), were ...
TSUKAMOTO, HIROKI   +2 more
openaire   +3 more sources

Induced terpene accumulation in Norway spruce inhibits bark beetle colonization in a dose-dependent manner [PDF]

open access: yes, 2011
Background: Tree-killing bark beetles (Coleoptera, Scolytinae) are among the most economically and ecologically important forest pests in the northern hemisphere.
Anna-Karin Borg-Karlson   +29 more
core   +2 more sources

Priorities for Bark Anatomical Research: Study Venues and Open Questions

open access: yesPlants, 2023
The bark fulfils several essential functions in vascular plants and yields a wealth of raw materials, but the understanding of bark structure and function strongly lags behind our knowledge with respect to other plant tissues.
Ilana Shtein   +6 more
doaj   +1 more source

Morphological correlates of fire-induced tree mortality in a central Amazonian forest. [PDF]

open access: yes, 2003
Tree characteristics were recorded from 2829 standing trees in 24 0.25-ha terra firme forest plots in central Amazonia, 3 y after a surface fire had swept through the study area.
Peres, Carlos A.   +2 more
core   +5 more sources

Insecticidal Effect Of Adansonia digitata Stem Bark And Leaf Powders On Dinoderus porcellus

open access: yesJournal of Applied Sciences and Environmental Management, 2021
This study evaluated insecticidal activity of different doses of Adansonia digitata stem bark and leaf powders on yam beetles dinoderus porcellus. Obtained plant parts from Federal colloge of Forestry, Jos were pulverized into powders.
W.C. John   +5 more
doaj   +1 more source

Analysis of the transcriptome of the needles and bark of Pinus radiata induced by bark stripping and methyl jasmonate

open access: yesBMC Genomics, 2022
Background Plants are attacked by diverse insect and mammalian herbivores and respond with different physical and chemical defences. Transcriptional changes underlie these phenotypic changes. Simulated herbivory has been used to study the transcriptional
J. S. Nantongo   +6 more
doaj   +1 more source

2-methyl-3-buten-2-ol: a pheromone component of conifer bark beetles found in the bark of nonhost deciduous trees [PDF]

open access: yes, 2012
Volatiles from bark of aspen,Populus tremulaL. and two species of birch: silver birch (Betula pendulaRoth.) and common birch (B. pubescensEhrh.), were collected by direct solvent extraction and aeration of both newly cut bark chips and undamaged stems in
Qing-He Zhang   +8 more
core   +1 more source

The Bark of the Spruce Picea jezoensis Is a Rich Source of Stilbenes

open access: yesMetabolites, 2021
Stilbenes are plant phenolic secondary metabolites that show beneficial effects on human health and possess high antifungal activity against plant pathogens.
Andrey R. Suprun   +3 more
doaj   +1 more source

Population dynamics of tree-killing bark beetles [PDF]

open access: yes, 2010
During outbreak periods, the European spruce bark beetle and the North American mountain pine beetle are able to kill millions of coniferous trees. Throughout the 20th century, six outbreaks have occurred in Sweden and four in British Columbia, with ...
Kärvemo, Simon
core   +1 more source

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