National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Rice sheath blight, caused by Rhizoctonia solani is one of the major diseases of rice. The pathogen infects rice plants directly through stomata or using lobate appressoria and hyphal masses called infection cushions. Initially the mycelium looked thread like structure, milky white in colour than mycelium converted mature Sclerotia. After the screening of different rice genotypes using 0 to 9 scaling (SES-IRRI), according to Leaf detach method, Pusa Basmati-1 was found highly susceptible variety and Swarna sub-1 was susceptible one. Among wild rice, O. australiensis was observed resistant species, while Oryza rufipogon was found moderately resistant species. Approximately the same results were found in humidified chamber condition. During molecular analysis, In control condition, 8A1 gene/primer was not expressed in Pusa Basmati-1 and Swarna sub-1, it was expressed in stressed condition in both the cultivar with the product size 155 bp. In both wild rice namely O. rufipogon and O. australiensis, 8A1 gene was expressed in control as well as stressed condition with the product size 155 bp. While 4C7 gene/primer was expressed continuously in control and stressed condition in susceptible rice cultivars; Pusa Basmati-1, Swarna sub-1 and wild rice accessions- O. rofipogon and O. australiensis with the product size 162 bp.
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