PIB TrackerIndia maps the pigeonpea genome, end to end
ICAR's telomere-to-telomere reference genome of arhar was approved as the global reference — India's first fully annotated T2T genome, and a tool for breeding climate-resilient pulses.
What happened
- ICAR developed India's first fully annotated telomere-to-telomere (T2T) reference genome.
- It is of pigeonpea (Cajanus cajan), variety 'Asha' — arhar or tur.
- The sequence was approved as the global reference genome of pigeonpea.
- It should accelerate climate-resilient, high-yielding and nutritious varieties.
- It builds on ICAR-NIPB's world-first draft genome of a pulse crop in 2011.
For Prelims
- Pigeonpea: Cajanus cajan, known as arhar/tur — a major pulse and protein source in the Indian diet.
- T2T genome: a telomere-to-telomere, gap-free sequence covering a chromosome end to end.
- Telomeres: the protective caps at chromosome ends, historically hard to sequence.
- Why completeness matters: gaps in draft genomes often hide genes for disease resistance and stress tolerance.
- Institution: ICAR-National Institute for Plant Biotechnology, which produced the world's first draft pulse genome in 2011.
- Policy context: India is a net importer of pulses; self-reliance is a stated goal.
For UPSC: A crop-biotechnology item. Use it for genomics in crop improvement, pulse self-reliance and protein security, climate-resilient breeding, and India's contribution to global agricultural science.
What it is NOT: This is a reference genome — a research tool for breeding — not a new pigeonpea variety or a genetically modified crop.
For Mains
Syllabus: GS3.13 · GS3.4 · Linkage L2
Anchor
The complete genetic blueprint of a crop that puts protein on Indian plates.
Substantiation (data)
India's first fully annotated telomere-to-telomere genome, of pigeonpea variety 'Asha', approved as the global reference — building on ICAR's world-first draft pulse genome of 2011.
Exemplification
Gap-free sequencing exposes the disease-resistance and stress-tolerance genes that fragmented draft assemblies missed.
Problematisation
A genome accelerates breeding but does not itself raise yields; varietal development, seed multiplication and farmer adoption take years.
Way-forward
Convert the blueprint into climate-resilient varieties through marker-assisted breeding, and strengthen the seed chain to reach farmers.
Position
Pulse self-reliance is a protein-security question, and genomics is how India shortens the road to it.
Deploys into: Biotechnology + agriculture (GS3.13, GS3.4) · genomics in crop improvement, pulse and protein security, and climate-resilient breeding.
Ministry of Agriculture & Farmers Welfare · 2026-08-04 · PRID 2294441 · PIB source ↗