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Please use this identifier to cite or link to this item:
http://krishi.icar.gov.in/jspui/handle/123456789/31504
Title: | Identification of new resistant sources against sheath blight of rice from Oryza rufipogon |
Other Titles: | Not Available |
Authors: | S K Aggarwal Kumari Neelam Rupinder Kaur Pusphinder Pal Singh Pannu Yogesh Vikal Kuldeep Singh Jyoti Jain Jagjeet Singh Lore |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR::Indian Institute of Maize Research ICAR::National Bureau of Plant Genetics Resources |
Published/ Complete Date: | 2019-01-01 |
Project Code: | Not Available |
Keywords: | sheath blight, rice, screening, O. rufipogon |
Publisher: | Not Available |
Citation: | Not Available |
Series/Report no.: | Not Available; |
Abstract/Description: | Wild relatives of rice (Oryza sativa) are important sources for rice improvement under both biotic and abiotic stress. Sheath blight caused by Rhizoctonia solani [Teleomorph - Thanatephorus cucumeris (Frank) Donk.] is major rice (Oryza sativa L.) disease and cause significant losses up to 69% under favourable environmental conditions worldwide. Four hundred five accessions of Oryza rufipogon were screened to identify resistance against sheath blight during the year 2015.There was not a single accession which showed complete resistance. Out of 405, 22 were found to be moderately resistant which were further evaluated during the years 2016 and 2017. Finally 19 accessions were identified as promising one which showed continuously moderately resistant reaction for three years. Correlation study revealed that the different disease variables such as lesion height, relative lesion height and disease score measured were significantly (P<0.05) correlated. All the genotypes and genotype*experiment interaction had a significant (P < 0.001) effect on all the disease variables. Cluster analysis showed that all the accessions were clustered into 4 groups during the year 2015. These groups showed moderately resistant, moderately susceptible and susceptible reaction. The results of present study showed the promising accessions viz., IRGC80600, IRGC80762, IRGC104404A, CR100036 and CR100436 can be utilized in the sheath blight resistance breeding programme. |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Presentation |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Not Available |
Volume No.: | Not Available |
Page Number: | Not Available |
Name of the Division/Regional Station: | Not Available |
Source, DOI or any other URL: | Not Available |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/31504 |
Appears in Collections: | CS-IIMR-Publication |
Files in This Item:
File | Description | Size | Format | |
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IPPC-2-14.pdf | 906.46 kB | Adobe PDF | View/Open |
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