Theoretical Biology Forum

Theoretical Biology Forum - Feed https://tbf.peerjournals.net Peerjournals Mon, 25 May 2026 05:41:34 +0000 hourly 1 https://wordpress.org/?v=6.0.9 https://tbf.peerjournals.net/wp-content/uploads/2022/10/cropped-TBF-LOGO-32x32.png Molecular Characterization of Advanced Breeding Lines For Blast and Bacterial Leaf Blight Resistance in Rice (Oryza Sativa L.) – Theoretical Biology Forum https://tbf.peerjournals.net 32 32 Molecular Characterization of Advanced Breeding Lines For Blast and Bacterial Leaf Blight Resistance in Rice (Oryza Sativa L.) https://tbf.peerjournals.net/molecular-characterization-of-advanced-breeding-lines-for-blast-and-bacterial-leaf-blight-resistance-in-rice-oryza-sativa-l/ Sat, 13 Apr 2024 09:05:00 +0000 admin V. Srujana * M. Balram * B. Laxmi Prasanna 1 B. Srinivas 2 N. Balram 3 P. Gonya Nayak 2 P.Madukar 2 K. Suryam 4 http://tbf.peerjournals.net/?p=2275

MTU1010 (Cottondora Sannalu) is one of the popular variety released by Andhra Pradesh Rice Research Institute (APRRI), Maruteru. It is a mega variety occupied maximum area in India and grown in many parts of Telangana particularly during Rabi season. It is a short duration, high yielding, long slender, BPH tolerant rice variety but it is highly susceptible to blast and bacterial blight diseases, which are endemic to many rice growing areas in India. Akshayadhan NIL (RP 6132) possessing major broad-spectrum resistance genes against blast (Pi54) and bacterial leaf blight (Xa21) was used as a donor to improve MTU1010 NIL (RP5973-20-9-8-24-12-7), through marker-assisted pedigree breeding combined with phenotype-based selection for agro-morphological traits specific for MTU1010 NIL. In the present investigation, Advanced breeding lines (F7 generation) were screened through foreground selection for confirmation of presence of target trait specific genes viz., for blast (Pi54) and bacterial blight (Xa21). Foreground selection was carried out with co-dominant markers pTA248 and Pi54-MAS for checking the presence of Pi54 and Xa21 respectively. Out of 50 advanced breeding lines, it was found that 35 lines possessing resistant allele of Pi54 gene and 34 lines possessing resistant allele of Xa21 gene. 22 breeding lines possessing both Pi54 and Xa21 resistant alleles. The same 50 advanced breeding lines were screened for BB resistance in the field and for blast in Uniform blast nursery at RARS, Jagtial during Rabi 2020-21. Out of 50 lines screened for both BB and blast, 35 breeding lines showed resistance against blast disease, and 34 breeding lines showed resistance against BB disease. 22 lines showed resistance to both blast and bacterial leaf blight disease. Six breeding lines exhibited good performance with the high level of resistance to the diseases viz., blast and bacterial blight and possess high grain yield and grain quality better than MTU1010 NIL. The results obtained in the present study indicated the success of marker-assisted pedigree breeding coupled with phenotypic selection.

https://tbf.peerjournals.net/molecular-characterization-of-advanced-breeding-lines-for-blast-and-bacterial-leaf-blight-resistance-in-rice-oryza-sativa-l/ Abiotic stress acid-soluble Adaptability Aedes aegypti alcoholic beverages Alkalinity Allelopathy Anatomical Anatomy and diseases and sustainability Angiogenesis Anti-apoptosis Anti-fibrosis Antibiotics Apple Aquaculture Artificial insemination Asian Rust Asiatic Black Bear Atrazine AUPDC available nitrogen Average mean avoidable yield losses Backcross Bacterial Black Spot coefficient of multiple determinations R2 Bacterial leaf blight Bio-regenerative tool Bioremediation Blast bollworm by-products cane yield capsicum Carrot climate change climate-resilient crop climate-smart agriculture clustering Coefficient of Variation Cognitive Proficiency Cold tolerance Colostrum composition Common bean Common beans common salt Conservation agriculture Constraints Contamination cooking qualities cooking quality correlation Cost of milk production Cow cropping systems crops CSI (Chlorophyll Stability Index) cultivar Curry leavespowder D-square dairy farmers Days open detoxification Dietary supplementation Diversity Dizygotic Twins. domestication syndrome Drip fertigation Economics Economics of Production Effect Environment eucalyptus oil exchangeable factor analysis Farmers Rights Fertigation schedule Fertilizer finger millet fish meal Foliar application food security FYM General Intelligence Genetic genetic variability Genetics genomics Genotype Genotype x environment interaction Germination Per cent germplasm registration Grain nutrient Groundnut Growth hard-to-cook trait Heat Shock Protein heavy metal herbicide Heritability heterosis hiiden hunger Histo-morphological Human health Humic acid inland salinity Irrigation Jejunum Kallakurichi Kidney Knol khol larvicidal potential leaf proline lignin Lignite based humin and Poultry manure based humin and Baby corn biomass production Liver LMH approach machine learning Macro macroelements Maize Makhana Production Mammary gland Mango manure Marker Assisted Breeding Marker-assisted selection Market Market demand Market potential marketing of milk Mastitis Membrane injury index Mesenchymal stem cells Micro microbial consortia microelements; seed germination milk production linear traits mineral Moisture stress/drought/limited irrigations Monozygotic Twins mosquito control MTU1010 mulberry leaves Native chicken Natural service No poverty Non-verbal intelligence Number of millable canes and Fibre per cent. Nutrient Uptake Nutrient use efficiency nutritional value observation Okra organic complexed outbreak ovicidal potential Paenibacillus Paratanaisia Path analysis Pati duck PDI pearl millet Pelican Pendimethalin percent juice sucrose pests PGFRA phytochemical phytoremediation plant antioxidants Plant Secondary Metabolites planting density pod shattering pollution PPV&FRA pre-emergence pre-weaned Precocious udder Price Priming; tomato; fruit morphology; biochemical components principal component analysis Principle component Protein contentTopramezone proteomics pupicidal efficacy Quality traits quizalofop RDF regression coefficient Residue burning Reverse Breeding rice RNAi root spread area Salinity tolerant rice cultures Salt stress seed vigour Seedling Vigour index-II senses Sensory evaluation Shukla's Stability Variance Skin Socio-economic Soil available primary soil microorganisms Soil organic carbon soil properties Soil secondary and micronutrients Soil test crop response Soybean SPAD/SCMR Spleen stable Studies sucking pests Superiority Measure Surface water sustainability Sustainable agriculture Tai Stability Analysis Tamil Nadu Temperatures Tetrameres Thermal conditioning TILLING Tomato transcriptomics Transgenic cotton Transition Triiodothyronine Urdbean Variability Velvet bean Verbal intelligence vermicompost vigour index VIGS water absorption Water soluble fertilizer Water Soluble Fertilizers Weed diversity weed management weeds WUE Yield yield character yield parameters Zebu cattle Zero hunger zero tillage Zinc Zinc fractions Zn-solubilizing bacteria zones