@article{PAR00001136, title = {{T}ension wood and opposite wood in 21 tropical rain forest species 1. {O}ccurrence and efficiency of the {G}-layer}, author = {{C}lair, {B}. and {R}uelle, {J}. and {B}eauch{\^e}ne, {J}. and {P}r{\'e}vost, {M}arie-{F}ran{\c{c}}oise and {F}ournier, {M}.}, editor = {}, language = {{ENG}}, abstract = {{W}ood samples were taken from the upper and lower sides of 21 naturally tilted trees from 18 families of angiosperms in the tropical rain forest in {F}rench {G}uyana. {T}he measurement of growth stresses ensured that the two samples were taken from wood tissues in a different mechanical state: highly tensile stressed wood on the upper side, called tension wood, and lower tensile stressed wood on the lower side, called opposite wood. {E}ight species had tension wood fibres with a distinct gelatinous layer ({G}-layer). {T}he distribution of gelatinous fibres varied from species to species. {O}ne of the species, {C}asearia javitensis ({F}lacourtiaceae), showed a peculiar multilayered secondary wall in its reaction wood. {C}omparison between the stress level and the occurrence of the {G}-layer indicates that the {G}-layer is not a key factor in the production of high tensile stressed wood.}, keywords = {gelatinous layer ; {G} layer ; {F}rench {G}uyana ; tropical rain forest ; tension wood ; wood anatomy}, booktitle = {}, journal = {{I}awa {J}ournal}, volume = {27}, numero = {3}, pages = {329--338}, ISSN = {0928-1541}, year = {2006}, URL = {https://www.documentation.ird.fr/hor/{PAR}00001136}, }