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VOL. 6, ISSUE 6 (2021)
Survey and occurrence of sheath blight disease of rice (Oryza sativa L.) and variability in pathogen (Rhizoctonia solani Kuhn) in coastal region of Cuddalore district of Tamil Nadu
Authors
R Kannan, K Sanjeev Kumar
Abstract
Survey and Variability in 15 isolates of Rhizoctonia solani Kuhn. causing sheath blight of rice with morphology and pathogenicity studies. A survey carried out to assess the occurrence of sheath blight disease incidence in major paddy growing areas of coastal region of Cuddalore district of Tamil Nadu, India revealed the endemic nature of disease. The maximum PDI was recorded in T.S. Pettai (39.7%) followed by Andarmullippallam (35.2%) and Karamedu (33.5%). Studies on morphological characterization of R. solani isolates showed that isolates were highly variable in mycelial growth, colour and sclerotial parameters. Among the fifteen isolates of R. solani, the isolate Rs15 was found to be more virulent.
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Pages:1029-1032
How to cite this article:
R Kannan, K Sanjeev Kumar "Survey and occurrence of sheath blight disease of rice (<em>Oryza sativa</em> L.) and variability in pathogen<em> </em>(<em>Rhizoctonia solani</em> Kuhn) in coastal region of Cuddalore district of Tamil Nadu ". International Journal of Botany Studies, Vol 6, Issue 6, 2021, Pages 1029-1032
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