2006
DOI: 10.1051/forest:2006032
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Compression stress in opposite wood of angiosperms: observations in chestnut, mani and poplar

Abstract: -In order to face environmental constraints, trees are able to re-orient their axes by controlling the stress level in the newly formed wood layers. Angiosperms and gymnosperms evolved into two distinct mechanisms: the former produce a wood with large tension pre-stress on the upper side of the tilted axis, while the latter produce a wood with large compression pre-stress on the lower side. In both cases, the difference between this stress level and that of the opposite side, in light tension, generates the be… Show more

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Cited by 28 publications
(19 citation statements)
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“…The formation of tension wood is induced by a gravitational stimulus [5]. This was experimentally proven by Jourez et al [11] for P-euramericana cv 'Ghoy'.…”
Section: Relationships Between Tension Wood Proportion Heartwood Andmentioning
confidence: 97%
“…The formation of tension wood is induced by a gravitational stimulus [5]. This was experimentally proven by Jourez et al [11] for P-euramericana cv 'Ghoy'.…”
Section: Relationships Between Tension Wood Proportion Heartwood Andmentioning
confidence: 97%
“…Usually it is said that tension wood has a very low MFA, but there are few published results [2,6,14,23,36,39] on MFA for angiosperms. Classical methods using pit apertures or iodine crystals [6,24,32] were not successful in our case.…”
Section: Discussionmentioning
confidence: 99%
“…'Normal' wood (NW), found in upright stems and on the lateral sides of tilted stem, has a slight tensile stress. 'Opposite wood' found on the opposite side of TW has very low tensile stress values, and sometimes slight compressive stress [22]. Opposite wood of CW has tensile stress values similar or slightly larger than NW.…”
Section: Different Forms Of Mechanically Active Woodsmentioning
confidence: 99%
“…The usual method is stress release: when a stressed piece of material is isolated from the surrounding tissues, it deforms, and this deformation can be measured for example using strain gauges [21][22][23][24][25], linear variable differential transducers [26,27] or other methods [3,[28][29][30][31]. The result of releasing the stress at the tree periphery is a contraction if the stress is tensile, and an extension if the stress is compressive.…”
Section: Evidencing and Measuring Wood Maturation Stressmentioning
confidence: 99%