Thermoperiodism
Thermoperiodism is the physiological response of plants to the alternation of day and night temperatures, influencing their growth, flowering, and metabolic efficiency.
Также говорят: thermoperiodicity, diurnal temperature variation
Most plants have evolved to perform best when temperatures drop slightly during the night. This decrease in temperature reduces the rate of respiration, allowing plants to conserve the carbohydrates and energy stored during the day, which are essential for developing fruits and biomass.
In greenhouse management, professionals leverage this concept by adjusting ventilation and heating systems to mimic natural temperature fluctuations. Controlling this rhythm allows growers to manipulate the growth rate and structural integrity of crops, ensuring they reach their potential without excessive energy waste.
A common mistake is maintaining constant, high temperatures throughout the night. This practice forces plants to exhaust their energy reserves, leading to spindly growth, reduced yields, and increased susceptibility to environmental stressors.