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Titre : |
The mechanics of root anchorage
|
Auteur(s) : | Roland Ennos |
Type de document : | Tiré à part |
Sujets : | Physiologie végétale ; Racine ; Système racinaire 164.3 (Racines. Organes de nutrition) ANCRAGE |
Résumé : |
The past 20 years has seen the re-emergence of the study of root anchorage. The research has combined theory from composite materials and foundations technology with experimental observations and mechanical testing. This has shown that the mechanical role of roots is restricted to the basal root system, but that it nevertheless greatly influences both the size and shape of root systems. Procumbent and climbing plants, which must resist being uprooted vertically, are most efficiently anchored by a fibrous root system. In contrast, self-supporting plants require rigid elements in their anchorage systems to prevent them toppling. Small herbaceous dicots tend to possess tap root systems, larger herbaceous dicots and trees possess plate systems, and monocots possess coronal or prop root sy[...]
The past 20 years has seen the re-emergence of the study of root anchorage. The research has combined theory from composite materials and foundations technology with experimental observations and mechanical testing. This has shown that the mechanical role of roots is restricted to the basal root system, but that it nevertheless greatly influences both the size and shape of root systems. Procumbent and climbing plants, which must resist being uprooted vertically, are most efficiently anchored by a fibrous root system. In contrast, self-supporting plants require rigid elements in their anchorage systems to prevent them toppling. Small herbaceous dicots tend to possess tap root systems, larger herbaceous dicots and trees possess plate systems, and monocots possess coronal or prop root systems. The mechanics of anchorage of each system has been determined in a range of species, methods used including direct observations of the motions of roots systems, and |
Format : | vol.33, p.133-157 |
Langue(s) : | Anglais |
Lien vers la notice : | https://infodoc.agroparistech.fr/index.php?lvl=notice_display&id=103383 |
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Localisation | Emplacement | Pôle | Section | Cote | Support | Disponibilité |
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Nancy | Bibliothèque | sans section | Br.27.437 | Papier | Empruntable Disponible |