Genetic modelling of rice for enhanced water use efficiency
A genomics-assisted breeding program to develop superior rice cultivars with improved water productivity by deciphering the genetic subcomponents of transpiration and photosynthetic carbon assimilation. The research combines haplotype mapping with marker-assisted breeding to create smart rice varieties suited for water-saving agronomic practices.
Overview
This research program addresses the critical challenge of improving water use efficiency (WUE) in rice cultivation by investigating the two fundamental physiological processes that govern differences in WUE: transpiration and photosynthetic carbon assimilation. By systematically deciphering the subcomponent mechanisms of these processes, the program aims to identify optimal genetic combinations that can be introgressed into superior rice genotypes. The initiative focuses on capturing natural genetic variability in WUE-related traits and translating these discoveries into practical breeding outcomes. The ultimate goal is to develop smart rice cultivars that deliver higher productivity under water-saving agronomic practices, addressing both food security concerns and sustainable water management in agriculture.
Technical specifications
Research approach and methodology:
- High-throughput phenotyping of a diverse germplasm panel to identify specific genetic contrasts differing in WUE and growth rates
- Intensive characterization of identified contrasts to understand differences in subcomponent mechanisms governing transpiration and photosynthesis
- Identification of allelic variations in genes and promoters responsible for variations in observed subcomponent traits
- Development of a comprehensive haplotype map using bioinformatic tools to catalog genomic variations
- Validation of identified haplotypes through controlled experimental procedures
- Development of haplotype-based molecular markers combined with QTL (Quantitative Trait Loci) identified through Genome-Wide Association Studies (GWAS) for subcomponent traits of WUE
- Integration of genomics-assisted breeding strategies to introgress favorable trait combinations into elite rice backgrounds
Technology readiness level
The research is currently at an early-to-mid stage of development. The program outlines a structured validation pipeline beginning with high-throughput phenotyping and germplasm screening, progressing through haplotype discovery and marker development, and culminating in marker-assisted breeding for trait introgression. While the conceptual framework and experimental design are established, the haplotypes and associated molecular markers are still in the discovery and validation phase. Further field validation and breeding trials will be required before commercial cultivar release can be realized.
About R.V. College of Engineering
RV College of Engineering (RVCE) is an autonomous, self‑financing engineering institution in Bengaluru, affiliated to Visvesvaraya Technological University and accredited NAAC A+. It connects to industry through an active Industry Institute Interaction Cell, 150+ MoUs, and co‑located, industry‑sponsored labs and Centers of Excellence that enable joint training, prototyping, and upskilling on campus. Proximity to Bengaluru’s technology cluster supports internships, capstone co‑supervision, and consultancy engagements throughout the year. Research here is supported by competitive national programs and industry, including DRDO/NRB, AICTE, and ISRO collaborations. An IP Coordination Cell, together with incubation resources and a student‑run Entrepreneurship Development Cell, assists with patenting, licensing, and venture formation.
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