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 (Oryza sativa) plays a significant role in global food security. Various biotic and abiotic stresses limit rice production. Among the various biotic stress, rice blast caused by Magnaporthe oryza is one of the most ruinous disease in all rice growing regions of the world. Use of resistant genes and quantitative resistance conferred by quantitative trait loci (QTLs) is the best option for management of blast. More than 100 blast resistance genes and a large number of QTLs (more than 350) were identified and mapped in different rice genotypes, but only 22 genes have been cloned and characterized at the molecular level. The genetic dissection of cloned genes revealed that the largest class of R-genes encodes nucleotide-binding, leucine-rich repeat (NBS-LRR) proteins. Gene pyramiding with marker assisted selection helps us to introgress more than one gene for blast resistance into a susceptible background. In this review, we extensively summarize the reported resistance gene information for rice blast along with their selection markers. We also focus on the reports of mapping and deployment of blast resistance with MAS and gene pyramiding. This update information will be helpful in rice breeding programmes to develop durable blast resistant rice variety through marker assisted selection.
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