Morphological and architectural features of young Nothofagus pumilio (Poepp. & Endl.) Krasser (Fagaceae)

Puntieri Javier, Raffaele Estela, Martinez Pascal, Barthélémy Daniel, Brion Cécilia. 1999. Morphological and architectural features of young Nothofagus pumilio (Poepp. & Endl.) Krasser (Fagaceae). Botanical Journal of the Linnean Society (130) : 395-410.

Autre titre : Caractéristiques morphologiques et architecturales de jeunes arbres de Nothofagus pumilio (Poepp. et Endl.) Krasser (Fagaceae)

Résumé : The morphology and architecture of young Nothofagus pumilio plants growing as understorey and in a cleared area were assessed. Length, number of internodes, presence of branches and apex condition were registered for each growth unit (GU) in the sampled plant. GUs were grouped according to branching order and age of the bearing axis. Understorey plants were seven years old and had a short trunk bearing 2-3 orders of branches; all of their most recent GUs were horizontal and of comparable size. Plants growing in the cleared area were 10-16 years old and had a vigorous vertical and dominant trunk bearing 4-5 orders of less vigorous, horizontal branches. Plants from the cleared area showed signs of having had comparable-size GUs in all of their axes at a younger stage of growth. #N. pumilio# plants appear to start their growth with the production of short Gus in all of their axes irrespective of the light conditions. In contrast, the development of a vertical, vigorous trunk, seems to be restricted to plants growing in open environments.

Mots-clés Agrovoc : Nothofagus pumilio, anatomie végétale, port de la plante, ombrage, croissance, ramification

Mots-clés géographiques Agrovoc : Argentine

Mots-clés complémentaires : Architecture végétale

Classification Agris : F50 - Anatomie et morphologie des plantes
F62 - Physiologie végétale - Croissance et développement

Auteurs et affiliations

• Puntieri Javier
• Raffaele Estela
• Martinez Pascal, Universidad Nacional del Comahue (ARG)
• Barthélémy Daniel, CIRAD-AMIS-AMAP (FRA) ORCID: 0000-0003-3187-2517
• Brion Cécilia

Source : Cirad - Agritrop (https://agritrop.cirad.fr/391929/)

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