PerrinRossiIsabel2017

Référence

Perrin, M., Rossi, S. and Isabel, N. (2017) Synchronisms between bud and cambium phenology in black spruce: Early-flushing provenances exhibit early xylem formation. Tree Physiology, 37(5):593-603. (Scopus )

Résumé

Bud and cambial phenology represent the adaptation of species to the local environment that allows the growing season to be maximized while minimizing the risk of frost for the developing tissues. The temporal relationship between the apical and radial meristems can help in the understanding of tree growth as a whole process. The aim of this study was to compare cambial phenology in black spruce (Picea mariana (Mill.) B.S.P.) provenances classified as early and late bud flushing. The different phases of cambial phenology were assessed on wood microcores sampled weekly from April to October in 2014 and 2015 from 61 trees growing in a provenance trial in Quebec, Canada. Trees showing an early bud flush also exhibited early reactivation of xylem differentiation, although an average difference of 12 days for buds corresponded to small although significant differences of 4 days for xylem. Provenances with early bud flush had an early bud set and completed xylem formation earlier than late bud flush provenances. No significant difference in the period of xylem formation and total growth was observed between the flushing classes. Our results demonstrate that the ecotype differentiation of black spruce provenances represented by the phenological adaptation of buds to the local climate corresponds to specific growth dynamics of the xylem. © 2016 The Author. Published by Oxford University Press. All rights reserved.

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@ARTICLE { PerrinRossiIsabel2017,
    AUTHOR = { Perrin, M. and Rossi, S. and Isabel, N. },
    TITLE = { Synchronisms between bud and cambium phenology in black spruce: Early-flushing provenances exhibit early xylem formation },
    JOURNAL = { Tree Physiology },
    YEAR = { 2017 },
    VOLUME = { 37 },
    NUMBER = { 5 },
    PAGES = { 593-603 },
    NOTE = { cited By 1 },
    ABSTRACT = { Bud and cambial phenology represent the adaptation of species to the local environment that allows the growing season to be maximized while minimizing the risk of frost for the developing tissues. The temporal relationship between the apical and radial meristems can help in the understanding of tree growth as a whole process. The aim of this study was to compare cambial phenology in black spruce (Picea mariana (Mill.) B.S.P.) provenances classified as early and late bud flushing. The different phases of cambial phenology were assessed on wood microcores sampled weekly from April to October in 2014 and 2015 from 61 trees growing in a provenance trial in Quebec, Canada. Trees showing an early bud flush also exhibited early reactivation of xylem differentiation, although an average difference of 12 days for buds corresponded to small although significant differences of 4 days for xylem. Provenances with early bud flush had an early bud set and completed xylem formation earlier than late bud flush provenances. No significant difference in the period of xylem formation and total growth was observed between the flushing classes. Our results demonstrate that the ecotype differentiation of black spruce provenances represented by the phenological adaptation of buds to the local climate corresponds to specific growth dynamics of the xylem. © 2016 The Author. Published by Oxford University Press. All rights reserved. },
    AFFILIATION = { Département des Sciences Fondamentales, Université du Québec À Chicoutimi, Chicoutimi, QC, Canada; Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China; Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, Quebec, QC, Canada },
    AUTHOR_KEYWORDS = { bud break; bud set; cell differentiation; meristem; secondary wall formation },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1093/treephys/tpx019 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020103203&doi=10.1093%2ftreephys%2ftpx019&partnerID=40&md5=f51c33c8ac9e60f3c1d78c591ad0f0ed },
}

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