A5004815624- Genetic Mapping and Diversity in Plants and Animals
- Genetics and Plant Breeding
- Rice Cultivation and Yield Improvement
- Wheat and Barley Genetics and Pathology
- Plant Genetic and Mutation Studies
- GABA and Rice Research
- Genetic and phenotypic traits in livestock
- Plant tissue culture and regeneration
- Plant Disease Resistance and Genetics
- Plant Stress Responses and Tolerance
- Crop Yield and Soil Fertility
- Seed Germination and Physiology
- Gene expression and cancer classification
- Transgenic Plants and Applications
- Genetic Associations and Epidemiology
- Genetic and Environmental Crop Studies
- Plant Micronutrient Interactions and Effects
- Toxin Mechanisms and Immunotoxins
- Data Analysis with R
- Seed and Plant Biochemistry
- Phytase and its Applications
- BRCA gene mutations in cancer
- Biofuel production and bioconversion
- Plant Pathogens and Resistance
- Infectious Diseases and Mycology
International Rice Research Institute
2020-2025
University of Nebraska–Lincoln
2016-2024
National Pingtung University of Science and Technology
2024
Østfold University College
2021
Virginia Tech
2020
Vaughn College of Aeronautics and Technology
2018
Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya
2013-2015
Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir
2011-2012
Plants respond with changes in their pattern of gene expression and protein products when exposed to low temperatures. Thus ability adapt has an impact on the distribution survival plant, crop yields. Many species tropical or subtropical origin are injured killed by non-freezing temperatures, exhibit various symptoms chilling injury such as chlorosis, necrosis, growth retardation. In contrast, tolerant able grow at cold Conventional breeding methods have met limited success improving...
Collecting plant phenotypic data with sufficient resolution (in both space and time) accuracy represents a long standing challenge in science research, has been major limiting factor for the effective use of genomic crop improvement. This is particularly true breeding where collecting large-scale field-based phenotypes can be very labor intensive costly. In this paper we reported multi-sensor system high throughput phenotyping breeding. The comprised five sensor modules (ultrasonic distance...
Winter wheat parents 'Harry' (drought tolerant) and 'Wesley' susceptible) were used to develop a recombinant inbred population with future goals of identifying genomic regions associated drought tolerance. To precisely map regions, high-density linkage maps are prerequisite. In this study genotyping-by- sequencing (GBS) was construct the map. The contained 3,641 markers distributed on 21 chromosomes spanned 1,959 cM an average distance 1.8 between markers. constructed revealed strong...
Genomic prediction (GP) is now routinely performed in crop plants to predict unobserved phenotypes. The use of predicted phenotypes make selections an active area research. Here, we evaluate GP for predicting grain yield and compare genomic phenotypic selection by tracking lines advanced. We examined four independent nurseries F3:6 F3:7 trialed at 6 10 locations each year. Yield was analyzed using mixed models that accounted experimental design spatial variations. Genotype-by-sequencing...
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...
Abstract Global nighttime temperatures are rising at twice the rate of daytime and pose a challenge for rice (Oryza sativa) production. High temperature (HNT) stress affects yield by reducing grain weight, size, fertility. Although genes associated with these parameters have been identified characterized under normal temperatures, genetic basis weight regulation HNT remains less explored. We examined natural variation single (SGW) imposed during development. A genome-wide association...
Summary A higher minimum (night‐time) temperature is considered a greater limiting factor for reduced rice yield than similar increase in maximum (daytime) temperature. While the physiological impact of high night (HNT) has been studied, genetic and molecular basis HNT stress response remains unexplored. We examined phenotypic variation mature grain size (length width) diverse set accessions under stress. Genome‐wide association analysis identified several HNT‐specific loci regulating as...
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...
Abstract The wheat ( Triticum spp.) stem rust pathogen, Puccinia graminis f. sp. tritici Eriks. and E. Henn. Pgt ), has continued to be a devastating biotic stress in production. Over previous decades, scientists have identified several resistance genes effective against . However, the ever‐evolving low availability of durable necessitates continuous identification wise deployment genes. To elucidate identity our previously reported hard red winter cultivar Gage, we used recombinant inbred...
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...
Abstract Rice genetic improvement is a key component of achieving and maintaining food security in Asia Africa the face growing populations climate change. In this effort, International Research Institute (IRRI) continues to play critical role creating disseminating rice varieties with higher productivity. Due increasing demand for rice, especially Africa, there strong need accelerate rate grain yield. an effort identify characterize elite breeding pool IRRI’s irrigated program, we analyzed...
Accurate measurement of seed size parameters is essential for both breeding efforts aimed at enhancing yields and basic research focused on discovering genetic components that regulate size. To address this need, we have developed an open-source graphical user interface (GUI) software, SeedExtractor determines shape (including area, perimeter, length, width, circularity, centroid), color with capability to process a large number images in time-efficient manner. In context, our application...
Abstract Increasing global surface temperatures is posing a major food security challenge. Part of the solution to address this problem improve crop heat resilience, especially during grain development, along with agronomic decisions such as shift in planting time and increasing diversification. Rice consumed by more than 3 billion people. For rice, thermal sensitivity reproductive development filling well‐documented, while knowledge concerning impact stress (HS) on early seed limited. Here,...
Heat stress occurring during rice ( Oryza sativa ) grain development reduces quality, which often manifests as increased chalkiness. Although the impact of heat on yield is well-studied, genetic basis quality under less explored quantifying tractable than yield. To address this, we used an image-based colorimetric assay (Red, R; and Green, G) for genome-wide association analysis to identify loci underlying phenotypic variation in grains exposed stress. We found R G pixel ratio (RG) derived...
Abstract Inferring trait networks from a large volume of genetically correlated diverse phenotypes such as yield, architecture, and disease resistance can provide information on the manner in which complex are interrelated. However, studies statistical methods tailored to multidimensional limited, whereas numerous available for evaluating massive number genetic markers. Factor analysis operates at level latent variables predicted generate observed responses. The objectives this study were...
Lumpy skin disease (LSD) is a vector-borne of cattle and water buffalo caused by the lumpy virus (LSDV) Capripoxvirus genus. LSD mainly affects lymphatics animals, manifests as firm nodules, low feed intake, drop in milk production. Animal-to-animal contact, blood-feeding insects, animal products, stable flies, mosquitoes can facilitate transmission across herds borders. The first case was reported 1929 Zambia. It endemic to Africa until 1985 later spread Eastern Europe Asia. latest outbreak...