Relationship among Electrical Signals, Chlorophyll Fluorescence, and Root Vitality of Strawberry Seedlings under Drought Stress

Agronomy

卷:12

Pengyu Zhou¹  Ji Qian¹  Guanghua Zhang¹  Weidong Yuan¹  Bao Di¹  Juan Zhou²  Tianran Ding³  Jianxi Zhu⁴ 

[1] College of Horticulture, Hebei Agriculture University, Lekai South Street 2596, Baoding 071000, China;

[2] College of Mechatronical & Electrical Engineering, Hebei Agriculture University, No. 289 Lingyusi Street, Baoding 071001, China;

[3] Institute for Environmental Management and Land-Use Planning, Université Libre de Bruxelles (ULB), Av. FD. Roosevelt 50, 1050 Brussels, Belgium;

[4] Zhejiang Agricultural Machinery Research Insitute, 1158 Zhihe Rd, Jinhua 321051, China;

关键词: strawberry;    drought stress;    electrical signals;    physiological parameters;   

DOI  :  10.3390/agronomy12061428

来源: DOAJ

【 摘 要 】

Drought area expansion has a great impact on the growth and development of plants. To contribute to the water management of strawberry, this work aims to study the chronological relationship between the electrical signals and representative physiological parameters of strawberry seedlings under drought stress. This study analyzed the characteristic variables of the electrical signals; physiological parameters under drought; and control treatments. Moreover, we compared the chronological sequence of the appearance of significant differences between drought and control treatment in terms of their physiological parameters and electrical signals. The results showed that with the increase of drought treatment, the time domain parameters (peak-to-peak value, standard deviation) and frequency domain parameters (spectral of central gravity, power spectrum entropy) of the drought-treated electrical signals showed significant differences from the control on Day 2 and Day 6, respectively (p < 0.05). The root vitality of the drought treatment was significantly different from the control on Day 4 (p < 0.05); the Fv/Fm and the SPAD were significantly different (p < 0.05) on Day 7. Electrical signals first start to show a significant difference between drought and control treatment, followed by physiological parameters. Therefore, the electrical signal can be used as an early indicator of drought stress conditions. This will provide a scientific basis for the actual water management of strawberry seedlings. It also provides a methodological and theoretical basis for other studies analyzing the relationship between plant physiological parameters and electrical signals under other stress conditions.

【 授权许可】

Unknown