Effect of application of several growth regulators and silicon element on greenhouse cucumber in response to tomato leaf curl Palampur virus infection

Document Type : Research Article

Authors

1 College of Agriculture, Shahid Bahonar University of Kerman, Kerman, Ira

2 College of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran

3 Horticultural Science, College of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran

4 Plant Pathology, College of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran

Abstract

Tomato leaf curl Palampur virus (ToLCPalV) is a destructive bipartite begomovirus which recently is 
responsible for huge losses to tomato and cucurbits production in Iran. In this research, the effect of the 
silicon element, growth regulators including salicylic acid (SA), methyl jasmonate (MJ), brassinosteroids 
(BR), silicon element (Si) and their interactions to response of ToLCPalV infection of the greenhouse 
cucumber was studied. The study was performed as factorial experiment based on randomized complete 
block design and carried out under greenhouse conditions in pots. Before planting, cucumber seeds were 
presoaked separately in SA (0.5 millimolar), MJ (5 micromolar) and BR (1 micromolar). Subsequently, two 
or three-leaf stage of cucumber seedlings was sprayed by Si solution (1 ml/lit), one week before 
agroinoculation with ToLCPalV infectious clone. To analyze morphological and chemical characteristics, 
plant growth parameters including fresh weight and plant height parameters and amount of the catalase, 
peroxidase, polyphenol oxidase, ascorbate peroxidase and guaiacol peroxidase enzymes were assessed 30 
days post agroinoculation with ToLCPalV infectious clone. Results indicated that, SA and combination of 
MJ+Si and BR+Si treatments resulted in raising the enzyme levels which leads to delay in appearance of 
ToLCPalV symptoms and decrease fresh weight and plant height parameters of plants. Based on the results 
of this research, application of plant growth regulators with or without silicon element including SA, MJ, 
MJ+Si and BR+Si could be resulted in increasing resistance in greenhouse cucumber against ToLCPalV 
infection. 

Keywords

Iranian Journal of Plant Pathology
Volume 59, Issue 1
May 2024
Pages 1-19

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