Evaluation of the Efficacy of Salicylic acid and Nicotinic acid to Control Collar Rot and Root Rot Caused by Sclerotium rolfsii and Enhance the Productivity of Fenugreek (Trigonella foenum-groecum L.) in Egypt | ||||
| Egyptian Journal of Botany | ||||
| Article 17, Volume 63, Issue 3, September 2023, Page 931-950 PDF (1.56 MB) | ||||
| Document Type: Regular issue (Original Article) | ||||
| DOI: 10.21608/ejbo.2023.187832.2231 | ||||
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| Authors | ||||
Hala F. Mohammed  1; Doaa A. Imara2
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| 1Medicinal and Aromatic Plants Res. Dept., Horticultural Research Institute, Agricultural Research Center, Giza, Egypt | ||||
| 2Ornamental, Medicinal and Aromatic Plant Diseases Research Department, Plant Pathology Research Institute, Agricultural Research Center, Giza, Egypt | ||||
| Abstract | ||||
| Recently, fenugreek (Trigonella foenum-groecum L.) has been subjected to several attacks by certain soil-borne fungi including Fusarium moniliforme, F. semitectum, F. solani, Rhizoctonia solani, and Sclerotium rolfsii causing damping –off, collar rot, and root rot which are considered serious diseases leading to delayed growth and subsequent collapse of some infected plants. Five fungal species were isolated from naturally infected fenugreek plants, and Sclerotium rolfsii was the most frequently isolated fungus. Sclerotium rolfsii was the most virulent among all tested fungi causing the highest percentages of damping-off, collar rot, and/or root rot in the Pathogenicity test. The results confirmed that salicylic acid (SA) and nicotinic acid (NA) (10mM) followed by (8mM)were more efficacious in inducing resistance against collar rot and root rot diseases, they decreased disease severity and the number of dead plants. These results reflected by improving plant growth parameters and yield production during the two growing seasons. Also, SA and NA (10mM) significantly increased the vegetative characteristics plant fresh and dry weight, and yield parameters i.e., average pod weight (g) compared with untreated control. Furthermore, the chemical composition of seed showed a significant increase in total phenol, flavonoids, trigonelline and carbohydrate content. The results suggested that exogenous SA (10mM) application can be used as a potential inducer of systemic acquired resistance, a promising approach for successfully managing collar rot and root rot diseases caused by Sclerotium rolfsii. Additionally, SA (10mM) treatment increased quality, quantity of fenugreek yield and can be used as a safe strategy against these diseases. | ||||
| Keywords | ||||
| Collar rot; Damping–off; Fenugreek; Root rot; Salicylic acid and nicotinic acid; Sclerotium rolfsii | ||||
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