AntonucciRossiDeslauriersEtAl2015

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Antonucci, S., Rossi, S., Deslauriers, A., Lombardi, F., Marchetti, M. and Tognetti, R. (2015) Synchronisms and correlations of spring phenology between apical and lateral meristems in two boreal conifers. Tree Physiology, 35(10):1086-1094. (Scopus )

Résumé

Phenological synchronisms between apical and lateral meristems could clarify some aspects related to the physiological relationships among the different organs of trees. This study correlated the phenological phases of bud development and xylem differentiation during spring 2010-14 in balsam fir (Abies balsamea Mill.) and black spruce [(Picea mariana Mill. (BSP)] of the Monts-Valin National Park (Quebec, Canada) by testing the hypothesis that bud development occurs after the reactivation of xylem growth. From May to September, we conducted weekly monitoring of xylem differentiation using microcores and bud development with direct observations on terminal branches. Synchronism between the beginning of bud development and xylem differentiation was found in both species with significant correlations between the phases of bud and xylem phenology. Degreeday sum was more appropriate in assessing the date of bud growth resumption, while thermal thresholds were more suitable for cambium phenology. Our results provide new knowledge on the dynamics of spring phenology and novel information on the synchronisms between two meristems in coniferous trees. The study demonstrates the importance of precisely defining the phases of bud development in order to correctly analyse the relationships with xylem phenology. © The Author 2015. Published by Oxford University Press. All rights reserved.

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@ARTICLE { AntonucciRossiDeslauriersEtAl2015,
    AUTHOR = { Antonucci, S. and Rossi, S. and Deslauriers, A. and Lombardi, F. and Marchetti, M. and Tognetti, R. },
    TITLE = { Synchronisms and correlations of spring phenology between apical and lateral meristems in two boreal conifers },
    JOURNAL = { Tree Physiology },
    YEAR = { 2015 },
    VOLUME = { 35 },
    PAGES = { 1086-1094 },
    NUMBER = { 10 },
    NOTE = { cited By 0 },
    ABSTRACT = { Phenological synchronisms between apical and lateral meristems could clarify some aspects related to the physiological relationships among the different organs of trees. This study correlated the phenological phases of bud development and xylem differentiation during spring 2010-14 in balsam fir (Abies balsamea Mill.) and black spruce [(Picea mariana Mill. (BSP)] of the Monts-Valin National Park (Quebec, Canada) by testing the hypothesis that bud development occurs after the reactivation of xylem growth. From May to September, we conducted weekly monitoring of xylem differentiation using microcores and bud development with direct observations on terminal branches. Synchronism between the beginning of bud development and xylem differentiation was found in both species with significant correlations between the phases of bud and xylem phenology. Degreeday sum was more appropriate in assessing the date of bud growth resumption, while thermal thresholds were more suitable for cambium phenology. Our results provide new knowledge on the dynamics of spring phenology and novel information on the synchronisms between two meristems in coniferous trees. The study demonstrates the importance of precisely defining the phases of bud development in order to correctly analyse the relationships with xylem phenology. © The Author 2015. Published by Oxford University Press. All rights reserved. },
    AUTHOR_KEYWORDS = { Balsam fir; Black spruce; Bud break; Cambium; Temperature; Xylogenesis },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1093/treephys/tpv077 },
    KEYWORDS = { Abies balsamea; Coniferales; Coniferophyta; Picea mariana },
    SOURCE = { Scopus },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84949553339&partnerID=40&md5=639f1859a8f016c31a3f16210c5bcf85 },
}

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