Preformation and Neoformation in Shoots of Nothofagus antarctica (G. Forster) Oerst. (Nothofagaceae) Shrubs from Northern Patagonia
The size (length and diameter) and number of leaf primordia of winter buds of Nothofagus antarctica (G. Forster) Oerst. shrubs were compared with the size and number of leaves of shoots derived from buds in equivalent positions. Buds developed in two successive years were compared in terms of size a...
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fthighwire:oai:open-archive.highwire.org:annbot:89/6/665 2023-05-15T13:36:07+02:00 Preformation and Neoformation in Shoots of Nothofagus antarctica (G. Forster) Oerst. (Nothofagaceae) Shrubs from Northern Patagonia PUNTIERI, J. G. STECCONI, M. BARTHÉLÉMY, D. 2002-06-01 00:00:00.0 text/html http://aob.oxfordjournals.org/cgi/content/short/89/6/665 https://doi.org/10.1093/aob/mcf108 en eng Oxford University Press http://aob.oxfordjournals.org/cgi/content/short/89/6/665 http://dx.doi.org/10.1093/aob/mcf108 Copyright (C) 2002, Oxford University Press ORIGINAL ARTICLES TEXT 2002 fthighwire https://doi.org/10.1093/aob/mcf108 2013-05-27T08:53:14Z The size (length and diameter) and number of leaf primordia of winter buds of Nothofagus antarctica (G. Forster) Oerst. shrubs were compared with the size and number of leaves of shoots derived from buds in equivalent positions. Buds developed in two successive years were compared in terms of size and number of leaf primordia. Bud size and the number of leaf primordia per bud were greater for distal than for proximally positioned buds. Shoots that developed in the five positions closest to the distal end of their parent shoots had significantly more leaves than more proximally positioned shoots of the same parent shoots. The positive relationship between the size of a shoot and that of its parent shoot was stronger for proximal than for distal positions on the parent shoots. For each bud position on the parent shoots there were differences in the number of leaf primordia per bud between consecutive years. The correlations between the number of leaf primordia per bud and bud size, bud position and parent shoot size varied between years. Only shoots produced close to the distal end of a parent shoot developed neoformed leaves; more proximal sibling shoots consisted entirely of preformed leaves. Leaf neoformation, a process usually linked with high shoot vigour in woody plants, seems to be widespread among the relatively small shoots developed in N. antarctica shrubs, which may relate to the species’ opportunistic response to disturbance. Text Antarc* Antarctica HighWire Press (Stanford University) Patagonia Annals of Botany 89 6 665 673 |
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Open Polar |
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HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
ORIGINAL ARTICLES |
spellingShingle |
ORIGINAL ARTICLES PUNTIERI, J. G. STECCONI, M. BARTHÉLÉMY, D. Preformation and Neoformation in Shoots of Nothofagus antarctica (G. Forster) Oerst. (Nothofagaceae) Shrubs from Northern Patagonia |
topic_facet |
ORIGINAL ARTICLES |
description |
The size (length and diameter) and number of leaf primordia of winter buds of Nothofagus antarctica (G. Forster) Oerst. shrubs were compared with the size and number of leaves of shoots derived from buds in equivalent positions. Buds developed in two successive years were compared in terms of size and number of leaf primordia. Bud size and the number of leaf primordia per bud were greater for distal than for proximally positioned buds. Shoots that developed in the five positions closest to the distal end of their parent shoots had significantly more leaves than more proximally positioned shoots of the same parent shoots. The positive relationship between the size of a shoot and that of its parent shoot was stronger for proximal than for distal positions on the parent shoots. For each bud position on the parent shoots there were differences in the number of leaf primordia per bud between consecutive years. The correlations between the number of leaf primordia per bud and bud size, bud position and parent shoot size varied between years. Only shoots produced close to the distal end of a parent shoot developed neoformed leaves; more proximal sibling shoots consisted entirely of preformed leaves. Leaf neoformation, a process usually linked with high shoot vigour in woody plants, seems to be widespread among the relatively small shoots developed in N. antarctica shrubs, which may relate to the species’ opportunistic response to disturbance. |
format |
Text |
author |
PUNTIERI, J. G. STECCONI, M. BARTHÉLÉMY, D. |
author_facet |
PUNTIERI, J. G. STECCONI, M. BARTHÉLÉMY, D. |
author_sort |
PUNTIERI, J. G. |
title |
Preformation and Neoformation in Shoots of Nothofagus antarctica (G. Forster) Oerst. (Nothofagaceae) Shrubs from Northern Patagonia |
title_short |
Preformation and Neoformation in Shoots of Nothofagus antarctica (G. Forster) Oerst. (Nothofagaceae) Shrubs from Northern Patagonia |
title_full |
Preformation and Neoformation in Shoots of Nothofagus antarctica (G. Forster) Oerst. (Nothofagaceae) Shrubs from Northern Patagonia |
title_fullStr |
Preformation and Neoformation in Shoots of Nothofagus antarctica (G. Forster) Oerst. (Nothofagaceae) Shrubs from Northern Patagonia |
title_full_unstemmed |
Preformation and Neoformation in Shoots of Nothofagus antarctica (G. Forster) Oerst. (Nothofagaceae) Shrubs from Northern Patagonia |
title_sort |
preformation and neoformation in shoots of nothofagus antarctica (g. forster) oerst. (nothofagaceae) shrubs from northern patagonia |
publisher |
Oxford University Press |
publishDate |
2002 |
url |
http://aob.oxfordjournals.org/cgi/content/short/89/6/665 https://doi.org/10.1093/aob/mcf108 |
geographic |
Patagonia |
geographic_facet |
Patagonia |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
http://aob.oxfordjournals.org/cgi/content/short/89/6/665 http://dx.doi.org/10.1093/aob/mcf108 |
op_rights |
Copyright (C) 2002, Oxford University Press |
op_doi |
https://doi.org/10.1093/aob/mcf108 |
container_title |
Annals of Botany |
container_volume |
89 |
container_issue |
6 |
container_start_page |
665 |
op_container_end_page |
673 |
_version_ |
1766074655876055040 |