TAILIEUCHUNG - Current status of rice breeding for sheath blight resistance

Rice is one of the three major food crops in the world. It is the staple food for most of the people of South-East Asia. Rice productivity fluctuates significantly from region to region; season to season due to biotic and abiotic stress. Sheath blight is one of the major biotic constraints in rice cultivation. It is caused by Rhizoctonia solani Kuhn. This disease can cause yield reduction between 20-50% depending on the severity of infection. Several genotypes reported for sheath blight resistance but none of the genotypes were found with absolute resistance. Sheath blight resistance is controlled by polygenes or quantitative trait loci (QTLs) each with small effect. Pyramiding of such QTLs is expected to increase resistance to sheath blight in the cultivars. Genetic engineering of crops with plant pathogenesis-related (PR) genes may give a promising and long-lasting solution for sheath blight disease management. | 2019 8 2 163-175 EXCELLENT PUBLISHERS International Journal of Current Microbiology and Applied Sciences ISSN 2319-7706 Volume 8 Number 02 2019 Journal homepage http Review Article https Current Status of Rice Breeding for Sheath Blight Resistance Susmita Dey1 Jyothi Badri2 Khushi Ram1 . Chhabra1 and . Janghel1 1 Department of Genetics Plant Breeding Chaudhary Charan Singh Haryana Agricultural University Hisar Haryana 125004 India 2Indian Institute of Rice Research Rajendranagar 500030 Hyderabad India Corresponding author ABSTRACT Keywords Rice Sheath blight Rhizoctonia solani Resistance QTLs Article Info Accepted 04 January 2018 Available Online 10 February 2019 Rice is one of the three major food crops in the world. It is the staple food for most of the people of South-East Asia. Rice productivity fluctuates significantly from region to region season to season due to biotic and abiotic stress. Sheath blight is one of the major biotic constraints in rice cultivation. It is caused by Rhizoctonia solani Kuhn. This disease can cause yield reduction between 20-50 depending on the severity of infection. Several genotypes reported for sheath blight resistance but none of the genotypes were found with absolute resistance. Sheath blight resistance is controlled by polygenes or quantitative trait loci QTLs each with small effect. Pyramiding of such QTLs is expected to increase resistance to sheath blight in the cultivars. Genetic engineering of crops with plant pathogenesis-related PR genes may give a promising and long-lasting solution for sheath blight disease management. Introduction Rice is one of the three major food crops in the world. It belongs to the genus Oryza and the tribe Oryzae of the family Gramineae Poaceae . It is cultivating almost one fifth of the total land area covered under cereals. The United Nation declared 2004 as International Year of Rice. The year s theme Rice

• Sinh học
• Sheath blight
• Rhizoctonia solani
• Rice breeding
• Sheath blight resistance
• Current status of rice breeding
• Sheath rot
• Stem rot
• Management of sheath blight
• Stem rot diseases of paddy
• Banded leaf and sheath blight
• Sheath blight of maize
• Growth and development
• Fungicides on the management
• Management of sheath blight of rice
• Sheath blight of rice
• Molecular characterization
• Causing sheath blight in rice
• Management of rice (Oryza sativa L )
• Rice (Oryza sativa L )
• Seed biopriming
• Disease incidence and disease severity
• Host range
• Western plain zone
• Weeds to rice crop
• P fluorescens
• Biological management
• Rice in field condition
• Sheath blight disease management
• Pseudomonas fluorescens isolate
• Banded leaf
• Maize cultivation in Bihar
• Resistance source
• Fluorescent pseudomonads
• Disease severity
• Pseudomonas fluorescens against sheath blight
• Pseudomonas fluorescens against sheath blight in rice
• Disease incidence
• Severity and R solani
• Rice in Telangana state
• Sheath blight disease of rice
• Rhizoctonia solani maize
• Maize caused
• Sheath blight disease of maize
• Non systemic fungicides invitro
• Invivo condition against banded leaf
• Rhizoctonia solani Kuhn
• Vitamins on epidemiological components
• Antifungal activities
• Phytoextracts against rhizoctonia solani
• Bioagents botanicals
• Botanicals against Rhizoctonia spp
• Stages of infection
• Coir waste
• Coir waste compost
• Incidence of sheath blight of rice
• Thanatephorus cucumeris
• Non systemic fungicides
• Rice sheath Blight
• Comparative efficacy
• Rice sheath blight fungus Rhizoctonia solani
• Host range studies
• Rice sheath blight pathogen
• Soil surface
• Harbour externally viable pathogen
• Temperate conditions
• Different levels of phosphorus
• Plant nutrient
• Phenolic content
• Phenolic content of rice
• Plant nutrients on sheath blight
• Journal of Science and Technology
• Screening of salt tolerant bacteria
• Plant growth promotion activities
• Rice blast and sheath blight disease
• Magnaporthe sp
• BP3
• Polyphenol oxidases
• Rhizoctonia solani isolates
• Sheath blight in maize
• Isozyme patterns
• Gene editing
• CRISPR Cas9
• Rice transformation
• Phytochrome and flowering time 1
• Disease cycle
• Screening technique
• Disease management