Vol. 7, Issue 6 (2019)
Screening of rice variety for resistance against sheath blight caused by Rhizoctonia solani
Author(s): Megha Thakur, Ashruti Kesharwani, Tamin and PK Tiwari
Abstract: An experiment was laid out during 2017-2018 at experimental field of IGKV, Raipur and detailed observation of sheath blight of rice was taken. The disease samples of rice were collected from farmer fields of different places like Raipur, Durg, Rajnandgaon and Gariyaband. The fungus Rhizoctonia solani were isolated and purified in the laboratory. Pathogenicity of the isolates was determined on susceptible rice cultivar Swarna and Kranti under the field condition. Host plant resistance were also studied under the field condition. Screening of rice entries of Kranti Variety against four isolates of Rhizoctonia solani collected from different places of Chhattisgarh i.e. Raipur, Durg, Rajnandgaon and Gariyaband. Twenty three entries of Kranti variety i.e., NSN-1-77, NSN-1-83, BRIDING-4, GIP-108, GIP-855, NSN-1-89, NSN-1-79, NSN-1-107, NSN-2-68, NSN-2-151, NSN-2-298, NSN-2-329, NSN-1-5, NSN-2-86, DSN-112, SIET-1-42, SIET-2-55, FSVT-MS-18, CANP-30, NSN-1-116, NSN-1-123, NSN-1-152, DSN-38 along with check TN1 were grown in field. Responses of plant in various entries were recorded according to Standard evaluation system (SES), IRRI (2014) and graded as per disease rating scale i.e. Immune, Highly Resistant, Resistant, Moderately Resistant, Susceptible and Highly Susceptible. In host plant resistance study under field conditions the rice variety kranti which are inoculated with R. solani of Gariyaband isolates i.e. NSN-1-77, NSN-1-83, BRIDING-4, GIP-108, GIP-855, NSN-1-89, NSN-1-79, NSN-1-107, NSN-2-68, NSN-2-151, NSN-2-298, NSN-2-329, NSN-1-5, NSN-2-86, DSN-112, SIET-1-42, SIET-2-55, FSVT-MS-18, CANP-30, NSN-1-116, NSN-1-152 and DSN-38 were showed resistant reaction against sheath blight disease of rice. Continuous evaluation of resistant plant varieties and their multiplication testing to confirm the resistance donor source for resistance to sheath blight at artificial inoculated conditions will be useful to breed a resistance variety under rice breeding programme.
Pages: 1701-1705 | 406 Views 89 Downloads
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How to cite this article:
Megha Thakur, Ashruti Kesharwani, Tamin, PK Tiwari. Screening of rice variety for resistance against sheath blight caused by Rhizoctonia solani. Int J Chem Stud 2019;7(6):1701-1705.
