A5011610340- Rice Cultivation and Yield Improvement
- Genetic Mapping and Diversity in Plants and Animals
- GABA and Rice Research
- Plant responses to water stress
- Plant Disease Resistance and Genetics
- Genetics and Plant Breeding
- Agronomic Practices and Intercropping Systems
- Agricultural Science and Fertilization
- Genetic and Environmental Crop Studies
- Legume Nitrogen Fixing Symbiosis
- Plant Genetic and Mutation Studies
- Plant Pathogens and Resistance
- Agricultural pest management studies
- Wheat and Barley Genetics and Pathology
- Sesame and Sesamin Research
- Insect-Plant Interactions and Control
- Plant Pathogenic Bacteria Studies
- Plant-Microbe Interactions and Immunity
- Banana Cultivation and Research
- Plant Micronutrient Interactions and Effects
- Crop Yield and Soil Fertility
- Weed Control and Herbicide Applications
- Agricultural Economics and Practices
- Plant Virus Research Studies
- Plant Pathogens and Fungal Diseases
International Rice Research Institute
2017-2022
Fakir Mohan University
2022
Agricultural Research Organization
2022
International Crops Research Institute for the Semi-Arid Tropics
2002-2021
Sri Karan Narendra Agriculture University, Jobner
2016
Acharya N. G. Ranga Agricultural University
2014-2015
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...
Unfavorable climatic changes have led to an increased threat of several biotic and abiotic stresses over the past few years. Looking at massive damage caused by these stresses, we undertook a study develop high yielding climate-resilient rice, using genes conferring resistance against blast (Pi9), bacterial leaf blight (BLB) (Xa4, xa5, xa13, Xa21), brown planthopper (BPH) (Bph3, Bph17), gall midge (GM) (Gm4, Gm8) QTLs for drought tolerance (qDTY1.1 qDTY3.1) through marker-assisted forward...
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...
Sheath blight, caused by the pathogenic fungus Rhizoctonia solani Kühn, is one of most devastating diseases in rice. Breeders have always faced challenges acquiring reliable and absolute resistance to this disease existing rice germplasm. In context, 40 germplasm including eight wild, four landraces, twenty- six cultivated two advanced breeding lines were screened utilizing colonized bits typha. Except Tetep ARC10531 which expressed moderate level disease, none could be found authentically...
Strong seedling vigor is desirable trait in dry direct-seeded rice (DSR) for enhancing crop establishment and the ability to compete against weeds. A set of 253 BC3F4 lines derived from cross between Swarna Moroberekan was phenotyped early (EV) 8 related traits viz., uniform emergence (EUE), shoot length (SHL), stem (SL), fresh weight (SFW), total (TFW), (SDW), (TDW) root (RDW). Composite interval mapping analysis using genotypic data 194 SNP markers identified six genomic regions associated...
Abstract QTLs for rice grain yield under reproductive stage drought stress ( qDTY ) identified earlier with low density markers have shown linkage drag and need to be fine mapped before their utilization in breeding programs. In this study, genotyping-by-sequencing (GBS) based high-density map of was developed using two BC 1 F 3 mapping populations namely Swarna*2/Dular (3929 SNPs covering 1454.68 cM) IR11N121*2/Aus196 (1191 1399.68 average marker 0.37 cM 1.18 respectively. total, six...
The complexity of genotype × environment interactions under drought reduces heritability, which determines the effectiveness selection for tolerance and development tolerant varieties. Genetic progress measured through changes in yield performance over time is important determining efficiency breeding programmes test cultivars are replaced each year on assumption that new will surpass older cultivars. goal our study was to determine annual rate genetic gain rice grain a drought-prone rainfed...
Abstract Direct selection for yield under drought has resulted in the release of a number drought-tolerant rice varieties across Asia. In this study, we characterized physiological traits that have been affected by strategy breeding trials sites Bangladesh, India, and Nepal. Drought- lines showed consistently longer flag leaves lower stomatal density than our drought-susceptible check variety, IR64. The influence environmental parameters other treatments on leaf was evidenced close grouping...
Dry direct-seeded rice (DSR) is an alternative crop establishment method with less water and labor requirement through mechanization. It provides better opportunities for a second during the cropping season therefore, feasible system to transplanted lowland rice. However, lodging one of major constraints in attaining high yield DSR. Identification QTLs resistance their subsequent use improving varieties under DSR will be efficient breeding strategy address problem. In order map associated...
Abstract Epistatic interactions of QTLs with the genetic background and QTL-QTL interaction plays an important role in phenotypic performance introgression lines developed through genomic-assisted breeding (GAB). In this context, NIL pairs various drought QTL ( qDTY ) combinations IR64, TDK1- Sub1 Savitri backgrounds were utilized to study interactions. Multi-season phenotyping harboring similar provided contrasting for grain yield under (RS) (classified as high low yielding NILs) but nearly...
The elite Indian rice variety, Naveen is highly susceptible to major biotic and abiotic stresses such as blast, bacterial blight (BB), gall midge (GM) drought which limit its productivity in rainfed areas. In the present study, a combined approach of marker-assisted forward (MAFB) back cross (MABC) breeding was followed introgress three genes, viz., Pi9 for Xa21 Gm8 QTLs, viz ., qDTY 1 . , 2 4 conferring increased yield under background Naveen. At each stage advancement, gene-based/linked...
Among the rice insects, brown planthopper (BPH), (Nilaparvata lugens Stål) is a monophagous migratory phloem-sucking insect causing severe loss in Asiatic countries. High nitrogen and willful insecticide application coupled with an increase temperature have created havoc by this pest during last few years certain parts of India, Indonesia, China, Japan, Taiwan, Vietnam, Philippines. Though chemical control measures are advocated to mitigate insect, yet, incorporation host-plant resistance...
A field experiment was conducted under loamy sand soil during kharif 2020 and 2021 at Agronomy farm, S.K.N. College of Agriculture, Jobner. The treatments comprising seven integrated nutrient management practices (control, 100% RDN, RDN through FYM, vermicompost, 50% + N vermicompost FYM vermicompost) four levels sulphur (0, 20, 40 60 kg/ha) assigned respectively to main sub plots were replicated thrice in split plot design. Result revealed that different nitrogen had a significant effect on...
Abstract Occurrence of multiple abiotic stresses in a single crop season has become more frequent than before. Most the traditional donors possessing tolerance to are tall, low-yielding with poor grain quality. To facilitate efficient use complex polygenic traits rice molecular breeding research, we undertook development introgression lines background high-yielding, semi-dwarf varieties good The study reports and evaluations over 25,000 eleven elite genetic backgrounds for improvement yield...
Abstract BACKGROUND Nutrient deficiency in humans, especially children and lactating women, is a major concern. Increasing the micronutrient concentration staple crops like rice one way to overcome this. The content rice, iron (Fe) zinc (Zn) content, highly variable. identification of genotypes which there are naturally high Fe Zn concentrations across environments an important target towards production biofortified rice. RESULTS Phenotypic correlations between grain were positive...
There is an urgent need to breed dry direct-seeded adapted rice varieties in order address the emerging scenario of water–labor shortage. The aim this study was develop high-yielding, utilizing biparental multiparental crosses involving as many six different parents conventional breeding programs and 12 genomics-assisted programs. rigorous single plant selections were followed from F 2 generation onwards phenotypic selection quantitative trait locus (QTL)/gene-based/linked markers for...
Abstract Rice ( Oryza sativa L.) in rainfed marginal environments is prone to multiple abiotic and biotic stresses, which can occur combination a single cropping season adversely affect rice growth yield. The present study was undertaken develop high‐yielding, climate‐resilient that provide tolerance stresses. An assembled first‐crossing scheme employed transfer 15 quantitative trait loci (QTL) genes— qDTY 1.1 , 2.1 3.1 12.1 (drought), Sub1 (submergence), Gm4 (gall midge), Pi9 Pita2 (blast),...
Among the different challenges related to rice (Oryza sativa L.) cultivation, drought, bacterial leaf blight (BLB), and blast are key stresses that significantly affect grain yield (GY) in rice. To ameliorate this issue, marker-assisted forward breeding (MAFB) coupled with a simultaneous crossing approach was used combine three drought tolerant quantitative trait loci (QTL)-qDTY1.1 , qDTY3.1 qDTY12.1 -four BLB genes-Xa4, xa5, xa13, Xa21-and one blast-resistance gene, Pi9, elite cultivar...
Emmer wheat (Triticum turgidum ssp. dicoccum) is one of the world's oldest domesticated crops, and it harbors a potentially rich reservoir agronomic nutritional quality trait variations. The growing global demand for plant-based health-food niche markets has promoted new commercial interest in ancient grains, including wheat. Although T. dicoccum can also perform well under harsh environments, its cultivation along Mediterranean agro-ecosystems sparse. Here, we analyze unique tetraploid...