Phytomers are functional units of a plant, continually produced by root and shoot meristems throughout a plant's vegetative life-cycle.. Increases in a phytomer can be measured using the rate of phyllochron (rate of appearance of leaves on a shoot). Related to the phyllochron is the plastochron, which is the rate of leaf primordia initiation. Since many more leaf primordia are initiated than leaves develop, the plastochron develops at a much faster rate (sometimes as much as twice as quickly) as the phyllochron.
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| - Phytomère (fr)
- Fitomero (it)
- Phytomer (en)
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| - En botanique, un phytomère, appelé aussi métamère (car il est l’équivalent du métamère en anatomie animale), est une unité fonctionnelle constitutive d'une plante. La croissance de cette dernière est déterminée par la répétition et l'empilement des phytomères. Les phytomères sont produits continuellement pendant toute la durée végétative d'une plante.Un phytomère est constitué typiquement d'un nœud à partir duquel se développe une feuille, d'un entrenœud, c'est-à-dire d'un segment de la tige compris entre deux nœuds successifs et d'un bourgeon axillaire situé à la base de la feuille. (fr)
- Il fitomero in botanica è il nome assegnato all'unità funzionale di una pianta. È un elemento composto che ripetuto ne determina la crescita. I fitomeri sono continuamente prodotti durante tutta la vita vegetativa di una pianta e sono tipicamente costituiti da un nodo dal quale si sviluppa una foglia, da un internodo, cioè una parte di fusto posta tra due nodi, e da una gemma ascellare posta alla base della foglia. (it)
- Phytomers are functional units of a plant, continually produced by root and shoot meristems throughout a plant's vegetative life-cycle.. Increases in a phytomer can be measured using the rate of phyllochron (rate of appearance of leaves on a shoot). Related to the phyllochron is the plastochron, which is the rate of leaf primordia initiation. Since many more leaf primordia are initiated than leaves develop, the plastochron develops at a much faster rate (sometimes as much as twice as quickly) as the phyllochron. (en)
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| - En botanique, un phytomère, appelé aussi métamère (car il est l’équivalent du métamère en anatomie animale), est une unité fonctionnelle constitutive d'une plante. La croissance de cette dernière est déterminée par la répétition et l'empilement des phytomères. Les phytomères sont produits continuellement pendant toute la durée végétative d'une plante.Un phytomère est constitué typiquement d'un nœud à partir duquel se développe une feuille, d'un entrenœud, c'est-à-dire d'un segment de la tige compris entre deux nœuds successifs et d'un bourgeon axillaire situé à la base de la feuille. (fr)
- Phytomers are functional units of a plant, continually produced by root and shoot meristems throughout a plant's vegetative life-cycle.. Increases in a phytomer can be measured using the rate of phyllochron (rate of appearance of leaves on a shoot). Related to the phyllochron is the plastochron, which is the rate of leaf primordia initiation. Since many more leaf primordia are initiated than leaves develop, the plastochron develops at a much faster rate (sometimes as much as twice as quickly) as the phyllochron. Initially, a young plant will only produce phytomers at its apical meristems but later in development, secondary meristems will begin to form and phytomers will be formed on this lateral plant growth. (en)
- Il fitomero in botanica è il nome assegnato all'unità funzionale di una pianta. È un elemento composto che ripetuto ne determina la crescita. I fitomeri sono continuamente prodotti durante tutta la vita vegetativa di una pianta e sono tipicamente costituiti da un nodo dal quale si sviluppa una foglia, da un internodo, cioè una parte di fusto posta tra due nodi, e da una gemma ascellare posta alla base della foglia. (it)
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