Vol. 6, Issue 6 (2018)
Induced resistance in potato against late blight caused by Phytophthora infestans (Mont.) de Bary through inorganic chemicals as inducer
Author(s): Rakesh Kumar, SK Biswas, Deepak Baboo, Ajay Chaurasiya and Anuj Bansal
Abstract: Pre-inoculation spray with salicylic acid, indole acetic acid, di potassium hydrogen orthophosphate, hydrogen peroxide, calcium chloride, ferric chloride and metalaxyl followed by challenge inoculation by Phytophthora infestans showed that among the treatment, salicylic acid treated plant representing minimum disease severity as 18.55, 17.67 and 20.72% at 2, 6 and 10 days after challenge inoculation. The potato plant treated with inorganic chemical as inducers sensitized to produce increased level of soluble protein and total phenol contents. The maximum increase of soluble protein content was found in salicylic acid treated potato leaves indicating 33.05, 35.65, 35.85 and 35.95 mg/g of fresh leaves against 22.30, 24.25, 24.35 and 24.55 mg/g in case of control at 2, 4, 6 and 8 days of pathogen inoculation. Similarly, total phenol content was also found to be maximum in salicylic acid treated plant, representing 2.62, 3.15, 3.25 and 3.27 mg/g of fresh leaves at 2, 4, 6 and 8 days of pathogen inoculation. Correlation coefficient analysis revealed that there was negative correlation (r = -0.945, -0.996 and-0.969) between disease severity and soluble protein content at 2, 6 and 10 days of treatment. Similarly, total phenol content also showed negative correlation (r = -0.898, -0.887 and -0.864) with disease severity. Thus, the protection of potato plants against P. infestans by inorganic chemicals as inducer might be due to stimulation of plants defense response.
Pages: 2504-2509 | 320 Views 40 Downloads
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How to cite this article:
Rakesh Kumar, SK Biswas, Deepak Baboo, Ajay Chaurasiya, Anuj Bansal. Induced resistance in potato against late blight caused by Phytophthora infestans (Mont.) de Bary through inorganic chemicals as inducer. Int J Chem Stud 2018;6(6):2504-2509.
