Volume 13, Issue 62 (vol. 13, no. 62 2024)
2024, 13(62): 331-346 |
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Amozadeh M, Ghanbari F, Movahedi R. The effect of melatonin on yield, growth traits and some physiological parameters of hot pepper under drought stress conditions. Plant Process and Function 2024; 13 (62) : 19
URL: http://jispp.iut.ac.ir/article-1-2028-en.html
URL: http://jispp.iut.ac.ir/article-1-2028-en.html
1- Department of Horticultural Sciences, Faculty of Agriculture, Ilam University, Ilam, Iran
2- Department of Horticultural Sciences, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
2- Department of Horticultural Sciences, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
Abstract: (336 Views)
Melatonin has different and important roles in many aspects of plant growth and development. Recently, it has been found that melatonin has antioxidant properties and plays a vital role in the processes of germination, maturation, aging, cell protection, and resistance to biotic and abiotic stresses. In this study, the effect of different concentrations of melatonin (0, 50, 100, and 200 μM) on yield, growth traits and some biochemical characteristics of hot pepper (Capsicum annuum) under different levels of deficit irrigation (irrigation after 40, 80 and 120 mm of evaporation from a class A pan) was investigated. The split plot experiment was carried out in the form of a randomized complete block design with three replications. The results showed that the reduction of irrigation decreased the growth and yield of the plant and increased the content of proline and malondialdehyde. Application of melatonin at all irrigation levels improved the growth and performance of pepper in field conditions. Also, melatonin foliar application decreased the content of proline and malondialdehyde and increased chlorophyll and carotenoid compared to the control. The concentration of 200 μM melatonin had a better effect on the growth and yield of pepper than other concentrations. Also, the effectiveness of the melatonin hormone was observed more at the irrigation level of 120 mm of evaporation. In general, the results of this research showed that the use of melatonin (especially in concentrations of 100 and 200 μM) reduced the effects of drought stress in pepper plants by increasing the content of chlorophyll and reducing the accumulation of malondialdehyde and proline.
Article number: 19
Type of Study: Research |
Subject:
Droughts Stress
Received: 2024/01/29 | Accepted: 2024/04/7 | Published: 2024/10/14
Received: 2024/01/29 | Accepted: 2024/04/7 | Published: 2024/10/14
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