TERMIUM Plus®

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THERMOPERIOD [1 record]

Record 1 2010-03-08

English

Subject field(s)
  • Atmospheric Physics
  • Plant Biology
CONT

Thermoperiod refers to daily temperature change. Plants grow best when daytime temperature is about 10 to 15 degrees higher than nighttime temperature. Under these conditions, plants photosynthesize (build up) and respire (break down) during optimum daytime temperatures and then curtail respiration at night. However, not all plants grow best under the same range between nighttime and daytime temperatures. For example, snapdragons grow best at nighttime temperatures of 55°F; poinsettias, at 62°F.

French

Domaine(s)
  • Physique de l'atmosphère
  • Biologie végétale
DEF

Alternances de températures, favorables défavorables ou indifférentes à la germination.

CONT

Un autre facteur fondamental c'est la thermopériode, c'est-à-dire le rythme diurne ou annuel des températures. L'adaptation à ces variations thermiques est appelée le thermopériodisme.

CONT

Thermopériode [c'est la] succession des périodes froides et chaudes en cours d'année.

Spanish

Campo(s) temático(s)
  • Física de la atmósfera
  • Biología vegetal
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