Rossi Sergio, Deslauriers Annie, Anfodillo Tommaso, Morin Hubert, Saracino Antonio, Motta Renzo et Borghetti Marco. (2006). Conifers in cold environments synchronize maximum growth rate of tree‐ring formation with day length. New Phytologist, 170, (2), p. 301-310.
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URL officielle: http://dx.doi.org/doi:10.1111/j.1469-8137.2006.016...
Résumé
Intra-annual radial growth rates and durations in trees are reported to differ greatly in relation to species, site and environmental conditions. However, very similar dynamics of cambial activity and wood formation are observed in temperate and boreal zones. • Here, we compared weekly xylem cell production and variation in stem circumference in the main northern hemisphere conifer species (genera Picea, Pinus, Abies and Larix) from 1996 to 2003. Dynamics of radial growth were modeled with a Gompertz function, defining the upper asymptote (A), x-axis placement (β) and rate of change (κ). • A strong linear relationship was found between the constants β and κ for both types of analysis. The slope of the linear regression, which corresponds to the time at which maximum growth rate occurred, appeared to converge towards the summer solstice. • The maximum growth rate occurred around the time of maximum day length, and not during the warmest period of the year as previously suggested. The achievements of photoperiod could act as a growth constraint or a limit after which the rate of tree-ring formation tends to decrease, thus allowing plants to safely complete secondary cell wall lignification before winter.
Type de document: | Article publié dans une revue avec comité d'évaluation |
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ISSN: | 0028-646X |
Volume: | 170 |
Numéro: | 2 |
Pages: | p. 301-310 |
Version évaluée par les pairs: | Oui |
Date: | 2006 |
Identifiant unique: | 10.1111/j.1469-8137.2006.01660.x |
Sujets: | Sciences naturelles et génie > Sciences appliquées > Climatologie et météorologie Sciences naturelles et génie > Sciences appliquées > Foresterie et sciences du bois Sciences naturelles et génie > Sciences naturelles > Biologie et autres sciences connexes |
Département, module, service et unité de recherche: | Départements et modules > Département des sciences fondamentales Unités de recherche > Centre de recherche sur la Boréalie (CREB) |
Mots-clés: | conifers, intra-annual growth, photoperiod, temperature, wood, xylogenesis |
Déposé le: | 26 mai 2023 13:18 |
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Dernière modification: | 26 mai 2023 13:18 |
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