Annual shoot-growth in Nothofagus antarctica (G. Forster) Oersted (Nothofagaceae) from northern Patagonia
International audience The growth dynamics of annual shoots of Nothofagus antarctica shrubs from northern Patagonia was studied. The pattern of extension of the shoots derived from the three most distal buds of 100 parent shoots was registered. Weekly measurements and observations of extending shoot...
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ftunivnantes:oai:HAL:hal-03769607v1 2023-05-15T13:46:09+02:00 Annual shoot-growth in Nothofagus antarctica (G. Forster) Oersted (Nothofagaceae) from northern Patagonia Stecconi, M., Marina Puntieri, Javier G. Barthélémy, Daniel Universidad Nacional del Comahue Neuquén (UNCOMA) BotAnique et BioinforMatique de l'Architecture des Plantes (UMR AMAP) Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Recherche pour le Développement (IRD France-Ouest )-Centre National de la Recherche Scientifique (CNRS) 2000-03 https://hal.inrae.fr/hal-03769607 https://doi.org/10.1007/PL00009770 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/PL00009770 hal-03769607 https://hal.inrae.fr/hal-03769607 doi:10.1007/PL00009770 ISSN: 0931-1890 EISSN: 1432-2285 Trees - Structure and Function https://hal.inrae.fr/hal-03769607 Trees - Structure and Function, 2000, 14 (5), pp.289-296. ⟨10.1007/PL00009770⟩ Extension period Extension rate Nothofagus Plant architecture Shoot growth [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2000 ftunivnantes https://doi.org/10.1007/PL00009770 2023-02-08T02:29:17Z International audience The growth dynamics of annual shoots of Nothofagus antarctica shrubs from northern Patagonia was studied. The pattern of extension of the shoots derived from the three most distal buds of 100 parent shoots was registered. Weekly measurements and observations of extending shoots were carried out during the 1996–1997 growth season. The date of shoot extension initiation was less variable than the date of shoot extension cessation. Extension curves had an asymmetrically sigmoid outline. Most extension took place uninterruptedly between mid-September 1996 and the end of January 1997. Extension rate reached its highest value in the second half of the extension period. Leaf unfolding rate had a peak early in the extension period and fluctuated irregularly later on. The apical meristem of all shoots died by the end of shoot extension. In general terms, shoot length, diameter, leaf number and extension duration decreased from the first to the third position from the parent shoot’s apex, although exceptions to this pattern were found. Shoot extension rate was affected by maximum and minimum daily temperatures but not by the amount of precipitation during the extension period. The size of a bud was not related to the size of the shoot derived from it. The size of shoots in the third position from the apex was related to parent shoot size; this was not the case for more distal shoots. Article in Journal/Newspaper Antarc* Antarctica Université de Nantes: HAL-UNIV-NANTES Patagonia Trees 14 5 289 296 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Extension period Extension rate Nothofagus Plant architecture Shoot growth [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
Extension period Extension rate Nothofagus Plant architecture Shoot growth [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics [SDE.BE]Environmental Sciences/Biodiversity and Ecology Stecconi, M., Marina Puntieri, Javier G. Barthélémy, Daniel Annual shoot-growth in Nothofagus antarctica (G. Forster) Oersted (Nothofagaceae) from northern Patagonia |
topic_facet |
Extension period Extension rate Nothofagus Plant architecture Shoot growth [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience The growth dynamics of annual shoots of Nothofagus antarctica shrubs from northern Patagonia was studied. The pattern of extension of the shoots derived from the three most distal buds of 100 parent shoots was registered. Weekly measurements and observations of extending shoots were carried out during the 1996–1997 growth season. The date of shoot extension initiation was less variable than the date of shoot extension cessation. Extension curves had an asymmetrically sigmoid outline. Most extension took place uninterruptedly between mid-September 1996 and the end of January 1997. Extension rate reached its highest value in the second half of the extension period. Leaf unfolding rate had a peak early in the extension period and fluctuated irregularly later on. The apical meristem of all shoots died by the end of shoot extension. In general terms, shoot length, diameter, leaf number and extension duration decreased from the first to the third position from the parent shoot’s apex, although exceptions to this pattern were found. Shoot extension rate was affected by maximum and minimum daily temperatures but not by the amount of precipitation during the extension period. The size of a bud was not related to the size of the shoot derived from it. The size of shoots in the third position from the apex was related to parent shoot size; this was not the case for more distal shoots. |
author2 |
Universidad Nacional del Comahue Neuquén (UNCOMA) BotAnique et BioinforMatique de l'Architecture des Plantes (UMR AMAP) Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Recherche pour le Développement (IRD France-Ouest )-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Stecconi, M., Marina Puntieri, Javier G. Barthélémy, Daniel |
author_facet |
Stecconi, M., Marina Puntieri, Javier G. Barthélémy, Daniel |
author_sort |
Stecconi, M., Marina |
title |
Annual shoot-growth in Nothofagus antarctica (G. Forster) Oersted (Nothofagaceae) from northern Patagonia |
title_short |
Annual shoot-growth in Nothofagus antarctica (G. Forster) Oersted (Nothofagaceae) from northern Patagonia |
title_full |
Annual shoot-growth in Nothofagus antarctica (G. Forster) Oersted (Nothofagaceae) from northern Patagonia |
title_fullStr |
Annual shoot-growth in Nothofagus antarctica (G. Forster) Oersted (Nothofagaceae) from northern Patagonia |
title_full_unstemmed |
Annual shoot-growth in Nothofagus antarctica (G. Forster) Oersted (Nothofagaceae) from northern Patagonia |
title_sort |
annual shoot-growth in nothofagus antarctica (g. forster) oersted (nothofagaceae) from northern patagonia |
publisher |
HAL CCSD |
publishDate |
2000 |
url |
https://hal.inrae.fr/hal-03769607 https://doi.org/10.1007/PL00009770 |
geographic |
Patagonia |
geographic_facet |
Patagonia |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
ISSN: 0931-1890 EISSN: 1432-2285 Trees - Structure and Function https://hal.inrae.fr/hal-03769607 Trees - Structure and Function, 2000, 14 (5), pp.289-296. ⟨10.1007/PL00009770⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/PL00009770 hal-03769607 https://hal.inrae.fr/hal-03769607 doi:10.1007/PL00009770 |
op_doi |
https://doi.org/10.1007/PL00009770 |
container_title |
Trees |
container_volume |
14 |
container_issue |
5 |
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289 |
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296 |
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