Int Rice Res Newsl 15:1īala R, Goel RK (2007) Detection of sources of multiple disease resistance in different Oryza Species. Plant Genet Resour 17:554–558Īmante A, De la Pena R, Stich L, Leung H, Mew T (1990) Sheath blight (ShB) resistance in wild rices. Significantly associated SNPs could be used for introgression of ShB resistance traits into rice cultivars using marker-assisted selection.Īggarwal SK, Neelam K, Jain J, Kaur R, Pannu PPS, Lenka SK, Lore JS, Singh K (2019) Identification of promising resistance sources against sheath blight from the annual wild species of rice Oryza nivara (Sharma et Shastry). These findings provide valuable information to identify key SNPs associated with ShB resistance. Furthermore, seven ShB resistance loci were also found to be co-localized with previously reported ShB resistance genes/QTLs. The SNPs on chromosomes 3 and 9 were associated with multiple traits. Among them, eleven were associated with RLH, seven with PH, and one each with LH and DS. The GWAS analysis revealed a total of 22 significant SNPs associated with the ShB-related traits distributed on all the rice chromosomes except 10 and 12. A total of 44,109 high-quality SNP markers on 301 accessions were employed to identify significant marker-trait associations using a genome-wide association study (GWAS). lesion height (LH), plant height (PH), relative lesion length (RLH), and disease score (DS) during the years 2015, 2016, and 2017. In this report, we have evaluated 405 accessions of Oryza rufipogon for four ShB-related traits i.e. The use of host plant resistance is a very effective, economic, and sustainable strategy to control sheath blight disease in rice. But, overuse of chemical fungicides causes potential health and environmental risk. The application of chemical fungicides remains the primary approach for the management of this disease. It causes severe yield loss of up to 69% under favorable environmental conditions. Sheath blight (ShB) caused by Rhizoctonia solani is one of the serious constraints that hamper global rice production.
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