A5089632541- Rice Cultivation and Yield Improvement
- Genetic Mapping and Diversity in Plants and Animals
- GABA and Rice Research
- Genetics and Plant Breeding
- Plant nutrient uptake and metabolism
- Plant Micronutrient Interactions and Effects
- Plant responses to water stress
- Agriculture, Soil, Plant Science
- Plant Stress Responses and Tolerance
- Plant Disease Resistance and Genetics
- Genetic and phenotypic traits in livestock
- Plant Pathogenic Bacteria Studies
- Plant Genetic and Mutation Studies
- Arsenic contamination and mitigation
- Aluminum toxicity and tolerance in plants and animals
- Chromosomal and Genetic Variations
- Heavy metals in environment
- CRISPR and Genetic Engineering
- Aquaculture disease management and microbiota
- Plant tissue culture and regeneration
- Data Analysis with R
- Plant Disease Management Techniques
- Insect-Plant Interactions and Control
- Phytase and its Applications
- Plant Virus Research Studies
International Rice Research Institute
2018-2025
Indian Institute of Rice Research
2025
Central Rice Research Institute
2015-2017
Early seedling vigor (ESV) is the essential trait for direct seeded rice to dominate and smother weed growth. In this regard, 629 genotypes were studied their morphological physiological responses in field under aerobic situation on 14th, 28th 56th days after sowing (DAS). It was determined that early observations taken 14th DAS reliable estimators study ESV as compared to56th DAS. Further, 96 selected from by principal component (PCA) discriminate function analyses. The subjected decipher...
Rice exhibits enormous genetic diversity, population structure and molecular marker-traits associated with abiotic stress tolerance to high temperature stress. A set of breeding lines landraces representing 240 germplasm were studied. Based on spikelet fertility percent under temperature, tolerant genotypes broadly classified into four classes. Genetic diversity indicated a moderate level base the for trait Wright's F statistic estimates showed deviation Hardy-Weinberg expectation in...
Abstract An attempt was made in the current study to identify main-effect and co-localized quantitative trait loci (QTLs) for germination early seedling growth traits under low-temperature stress (LTS) conditions rice. The plant material used this an backcross population of 230 introgression lines (ILs) BC I F 7 generation derived from Weed Tolerant Rice-1 (WTR-1) (as recipient) Haoannong (HNG) donor). Genetic analyses LTS tolerance revealed a total 27 (M-QTLs) mapped on 12 chromosomes....
Estimating genetic trends using historical data is an important parameter to check the success of breeding programs. The estimated can act as a guideline target appropriate strategies and optimize program for improved gains. In this study, 17 years from IRRI's rice drought was used estimate assess program's success. We also identified top-performing lines based on grain yield values elite panel implementing future population improvement-based schemes. A two-stage approach pedigree-based...
Arsenic (As) is an unwanted toxic mineral that threatens the major rice-growing regions in world, especially South Asia. Rice production Bangladesh and India depends on As-contaminated groundwater sources for irrigating paddy fields, resulting elevated amounts of As topsoil. accumulating rice plants has a significant negative effect human animal health. Here, we present quantitative trait locus (QTL) mapping study to identify candidate genes conferring toxicity tolerance accumulation (Oryza...
Abstract Developing high-yielding, flood-tolerant rice varieties is essential for enhancing productivity and livelihoods in flood-prone ecologies. We explored genetic avenues beyond the well-known SUB1A gene to improve flood resilience rice. screened a collection of 6,274 elite genotypes from IRRI’s germplasm repository submergence stagnant flooding tolerance over multiple seasons years. This rigorous screening identified 89 outstanding genotypes, among which thirty-seven exhibited high...
Rice is the most important staple food crop, and it feeds more than half of world population. Brown planthopper (BPH) a major insect pest rice that causes 20-80% yield loss through direct indirect damage. The identification use BPH resistance genes can efficiently manage BPH. A molecular marker-based genetic analysis was carried out using 101 BC1F5 mapping population derived from cross between BPH-resistant indica variety Khazar an elite BPH-susceptible line Huang-Huan-Zhan. indicated...
The development of rice cultivars with nutrient use efficiency (NuUE) is highly crucial for sustaining global production in Asia and Africa. However, this requires a better understanding the genetics NuUE-related traits their relationship to grain yield. In study, simultaneous efforts were made develop efficient map quantitative trait loci (QTLs) governing rice. A total 230 BC1F5 introgression lines (ILs) developed from single early backcross population involving Weed Tolerant Rice 1, as...
Anther culture technique is the most viable and efficient method of producing homozygous doubled haploid plants within a short period. However, practical application this technology in rice improvement still limited by various factors that influence efficiency. The present study was conducted to determine effects two improved anther media, Ali-1 (A1) Ali-2 (A2), modified N6 medium, enhance callus formation plant regeneration japonica, indica, hybrids indica japonica cross. current...
Estimating genetic gains and formulating a future salinity elite breeding panel for rice pave the way developing better high-yielding tolerant lines with enhanced gains. Genetic gain is crucial parameter to check program's success help optimize strategies To estimate in IRRI's program identify best genotypes based on high values grain yield (kg/ha), we analyzed historical data from trials conducted IRRI, Philippines Bangladesh. A two-stage mixed-model approach accounting experimental design...
Rice grain shape and nutritional quality traits have high economic value for commercial production of rice largely determine the market price, besides influencing global food demand high-quality rice. In order to understand genetic components appearance in paddy, brown, head rice, 15 were evaluated by using 157 recombinant inbred lines (RILs) derived from a cross between two Iranian cultivars Ali-Kazemi (A) Kadous (K). A significant variation was observed showed transgressive segregation...
Sheath blight (ShB) is one of the most serious diseases in rice, leading to severe yield losses globally. In our study, we evaluated a total 63 rice genotypes for resistance against sheath disease by artificial inoculation over two seasons under field conditions and studied weather parameters associated with incidence. Based on years testing, 23 were found moderately resistant, 38 susceptible, 2 exhibited susceptible reaction disease. Among specific four (IC283139, IC283041, IC283038,...
Abstract Identification of a small core germplasm set representing the available genetic diversity is essential for its proper evaluation and subsequent utilization in rice improvement programmes. For constituting diverse mini‐core panel Indian germplasm, representative 6912 accessions drawn based on their geographic origin from whole collection N ational G ene B ank was genotyped using 36 microsatellite markers. Automated fragment analysis amplicons yielded total 435 alleles, with an...
Abstract Weed competitive ability (WCA) is vital for the improvement of grain yield under direct-seeded and aerobic rice ecosystems where weeds are a major limiting factor. Early seed germination (ESG) early seedling vigor (ESV) crucial traits WCA. This study attempted to map quantitative trait loci (QTLs) hotspot regions governing ESG ESV traits. A total 167 BC 1 F 5 selective introgression lines developed from an backcross population involving Tolerant Rice (WTR-1) as recipient parent...
The development of green super rice varieties with improved nutrient use efficiency (NuUE) is a vital target area to increase yield and make it more stable under rainfed conditions. In the present study, we followed an early backcross (BC) breeding approach by using high-yielding widely adapted Xian variety, Weed Tolerant Rice 1 (WTR-1), as recipient Geng Hao-An-Nong (HAN), donor. Starting from BC1F2 generation, BC population went through one generation selection irrigated, low-input,...
Early seedling vigor is an essential trait of direct-seeded rice. It helps the seedlings to compete with weeds for water and nutrient availability, contributes better establishment during initial phase crop growth. Seedling a complex trait, phenotyping by destructive method limits improvement this through traditional breeding. Hence, non-invasive, rapid, precise image-based technique developed increase possibility improve early breeding in rice other field crops.To establish assess...