Growth dynamics and morphology of annual shoots, according to their architectural position, in young Cedrus atlantica (Endl.) Manetti ex Carrière (Pinaceae)

Sabatier Sylvie-Annabel, Barthélémy Daniel. 1999. Growth dynamics and morphology of annual shoots, according to their architectural position, in young Cedrus atlantica (Endl.) Manetti ex Carrière (Pinaceae). Annals of Botany, 84 : 387-392.

Autre titre : Dynamique de croissance et morphologie de pousses annuelles, selon leur position architecturale, chez de jeunes arbres de Cedrus atlantica (Endl.) Manetti ex Carrière (Pinaceae)

Résumé : The influence of shoot architectural position on growth and branching pattern of young #Cedrus atlantica# (Endl.) Manetti ex Carrière trees were studied. Extension growth and type of axillary products (lateral bud, sylleptic short or long shoots) of annual shoots of increasing branching order (main stem, branches and branchlets) were recorded weekly during the 1993 growing season. Annual final shoot length, duration of extension, and maximum extension rate decreased with increasing branching order. Sylleptic axillary shoots occurred only on annual shoots of the main stem and branches and were produced when extension rate was at its highest. Differences in growth rate and final length of annual shoots, according to their architectural position, were related to differences in the total number and diversity of types of sylleptic axillary shoots produced. It is suggested that types and numbers of sylleptic axillary shoots produced are linked with threshold values for both final length and extension rate of the parent shoot.

Mots-clés Agrovoc : Cedrus atlantica, port de la plante, croissance, anatomie végétale, ramification

Mots-clés géographiques Agrovoc : France

Mots-clés complémentaires : Architecture végétale

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

Auteurs et affiliations

• Sabatier Sylvie-Annabel, CIRAD-AMIS-AMAP (FRA)
• Barthélémy Daniel, CIRAD-AMIS-AMAP (FRA) ORCID: 0000-0003-3187-2517

Source : Cirad - Agritrop (https://agritrop.cirad.fr/391934/)

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