TERMIUM Plus®

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RESISTANCE GASEOUS TRANSFER [1 record]

Record 1 2003-02-24

English

Subject field(s)
  • Plant Biology
CONT

The cuticle part of the leaf surface presents zero resistance to chemical transfer from air to the plants ..., thus the thin layer over the leaf is the only resistance to gaseous transfer. Unlike the transfer through the cuticle, the stomata part of the leaf presents some resistance ...

Key term(s)
  • gaseous transfer resistance

French

Domaine(s)
  • Biologie végétale
CONT

[...] la résistance au transfert d'un gaz dans l'air libre ou dans un matériau poreux est le quotient de la différence de concentration [delta C] entre deux niveaux par le flux [phi] : R = [delta C]/[phi].

CONT

Grâce à un jeu de résistances aux transferts gazeux plus favorable, les plantes à métabolisme dit en C4 (Maïs, Sorgho, Millet, Canne à sucre, Amaranthe,...) ont généralement une meilleure efficience de l'eau que les espèces à métabolisme en C3 (Blé, Betterave, Riz, Tournesol,...).

Spanish

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