A5012995458- Rice Cultivation and Yield Improvement
- Genetic Mapping and Diversity in Plants and Animals
- Plant Micronutrient Interactions and Effects
- GABA and Rice Research
- Genetics and Plant Breeding
- Plant responses to water stress
- Agricultural Science and Fertilization
- Aluminum toxicity and tolerance in plants and animals
- Trace Elements in Health
- Wheat and Barley Genetics and Pathology
- Plant-Microbe Interactions and Immunity
- Peanut Plant Research Studies
- Cassava research and cyanide
- Plant Pathogenic Bacteria Studies
- Soybean genetics and cultivation
- Plant Stress Responses and Tolerance
- Plant Disease Resistance and Genetics
- Crop Yield and Soil Fertility
- Nematode management and characterization studies
- Genetically Modified Organisms Research
- Selenium in Biological Systems
- Agricultural pest management studies
- Food Allergy and Anaphylaxis Research
- IoT-based Smart Home Systems
- Microbial Metabolites in Food Biotechnology
International Rice Research Institute
2015-2024
Saveetha University
2024
Indian Institute of Rice Research
2007-2018
Indian Council of Agricultural Research
2018
University of Agricultural Sciences Raichur
2003-2004
University of Agricultural Sciences, Dharwad
2003-2004
Abstract Green Revolution (GR) rice varieties are high yielding but typically drought sensitive. This is partly due to the tight linkage between loci governing plant height and tolerance. illustrated here through characterization of qDTY 1.1 , a QTL for grain yield under that co-segregates with GR gene sd1 semi-dwarf height. We report loss allele during was its in repulsion allele. Other drought-yield QTLs ( qDTY) also showed traits rejected varieties. Genetic diversity analysis 11 different...
The development of rice genotypes with micronutrient-dense grains and disease resistance is one the major priorities in improvement programs. We conducted Genome-wide association studies (GWAS) using a Multi-parent Advanced Generation Inter-Cross (MAGIC) Plus population to identify QTLs SNP markers that could potentially be integrated biofortification breeding. evaluated 144 MAGIC lines for agronomic traits over two locations seasons, while was screened season screen house. X-ray...
With the objective of improving grain yield (GY) Malaysian high quality rice cultivar MRQ74 under reproductive stage drought stress (RS), three QTLs, viz. qDTY 2.2, 3.1 , and 12.1 were pyramided by marker assisted breeding (MAB). Foreground selection using QTL specific markers, recombinant flanking background selections performed in every generation. BC1F3 derived lines (PLs) with different combinations evaluated both RS non-stress (NS) during dry season (DS) 2013 2014 at IRRI.The GY...
Marker-assisted breeding will move forward from introgressing single/multiple genes governing a single trait to multiple traits combat emerging biotic and abiotic stresses related climate change enhance rice productivity. MAS need address concerns about the population size needed introgress together more than two genes/QTLs. In present study, grain yield genotypic data different generations (F3 F8) for five marker-assisted programs were analyzed understand effectiveness of synergistic effect...
The identification and introgression of major-effect QTLs for grain yield under drought are some the best well-proven approaches improving tolerance rice varieties. In present study, we characterized Malaysian germplasm yield-related traits identified significant trait marker associations by structured association mapping.The screening was successful in with a reduction up to 60% heritability 78%. There wider phenotypic molecular diversity within panel, indicating suitability population...
Identification of quantitative trait loci (QTLs) for grain mineral elements can assist in faster and more precise development micronutrient dense rice varieties through marker-assisted breeding. In the present study, QTLs were mapped Fe Zn concentrations two BC2F3 mapping populations derived from crosses O. sativa cv Swarna with different accessions nivara. all, 10 8 identified population 1, 7 5 2, respectively. Eighty percent detected both Five three explained than 15% phenotypic variance...
Climate extremes such as drought and flood have become major constraints to the sustainable rice crop productivity in rainfed environments. Availability of suitable climate-resilient varieties could help farmers reduce grain yield losses resulting from climatic extremities. The present study was undertaken with an aim develop high-yielding submergence tolerant using marker assisted introgression qDTY1.1, qDTY2.1, qDTY3.1 Sub1. Performance near isogenic lines (NILs) developed background...
The development of micronutrient dense rice varieties with good agronomic traits is one the sustainable and cost-effective approaches for reducing malnutrition. Identification QTLs high grain Fe Zn, yield components helps in precise faster Zn rice. We carried out a three-season evaluation using IR05F102 x IR69428 derived doubled-haploid population at IRRI. Inclusive composite interval mapping was SNP markers Best Linear Unbiased Estimates phenotypic traits. A total 23 were identified eight...
Quantitative trait loci conferring high grain yield under drought in rice are important genomic resources for climate resilient breeding. Major and consistent QTLs usually co-locate with flowering and/or plant height QTLs, which could be due to either linkage or pleiotropy. Five mapping populations used the identification of major underwent multiple-trait, multiple-interval test (MT-MIM) estimate significance pleiotropy effects. Results indicated towards possible linkages between co-locating...
Malnutrition is one of the prevailing health problems worldwide, affecting a large proportion populations in rice-consuming countries. Breeding rice varieties with increased concentrations elements grain considered most cost-effective approach to alleviate malnutrition. Development molecular markers for high essential elements, particularly Zn, use marker-assisted selection (MAS) can hasten breeding efforts develop nutrient-dense grain. We performed QTL mapping four agronomic traits: days...
Rice provides energy and nutrition to more than half of the world's population. Breeding rice varieties with increased levels bioavailable micronutrients is one most sustainable approaches tackle micronutrient malnutrition. So, high zinc iron content in grain are primary targets biofortification breeding. In this study, we conducted QTL mapping using doubled haploid (DH) populations, PSBRc82 x Joryeongbyeo IR69428, phenotyped for agronomic traits during two growing seasons genotypic...
To improve the grain yield of lowland-adapted popular rice variety Samba Mahsuri under reproductive-stage drought (RS) and to understand interactions between QTLs, two mapping populations were developed using marker-assisted selection (MAS) recurrent (MARS). The mean pyramided lines (PLs) with qDTY 2.2 + 4.1 in MAS is significantly higher RS irrigated control than single QTLs. Among MARS PLs, four qDTYs (qDTY 1.1 2.1 3.1 11.1 ) QTLs yielded PLs other combinations. selected showed a advantage...
Abstract Golden Rice with β-carotene in the grain helps to address problem of vitamin A deficiency. Prior commercialize Rice, several performance and regulatory checkpoints must be achieved. We report results marker assisted backcross breeding GR2E trait into three popular rice varieties followed by a series confined field tests event introgression lines assess their agronomic carotenoid expression. Results from Philippines Bangladesh have shown that matched recurrent parents for yield...
Biofortification of rice with improved grain zinc (Zn) content is the most sustainable and cost-effective approach to address Zn malnutrition in Asia. Genomics-assisted breeding using precise consistent quantitative trait loci (QTLs), genes, haplotypes can fast-track development biofortified varieties. We conducted meta-analysis 155 QTLs reported from 26 different studies. Results revealed 57 meta-QTLs a significant reduction 63.2% 80% number confidence interval QTLs, respectively....