EFFECT OF LOW NIGHT AIR TEMPERATURE ON FLUCTUATING ASYMMETRY OF BIRD CHERRY LEAF BLADES

Abstract

The effect of night and day temperatures on the asymmetry of the leaf blades of the common bird cherry (Prunus padus L.) was studied. Temperature fluctuations in May 2021-2024 in Elektrostal (Moscow region) were studied. A statistically significant difference in May night temperatures was obtained. The difference in temperature between day and night did not show a deviation in asymmetry. Low temperatures were observed in 2022 and 2024 (-1°C). In these years, statistically significant indices of fluctuating asymmetry were obtained. In 2022 – FA = 0,002 and in 2024 – FA = 0,004 (respectively, p = 0,01 and p = 0,02). The work shows a significant effect of late spring frosts on the morphological features of the leaf blades of Prunus padus, indicating a decrease in the stability of the development of this species.

Keywords

• флуктуирующая асимметрия
• весенние ночные температуры
• черемуха обыкновенная
• fluctuating asymmetry
• spring night temperatures
• bird cherry