NRRI — ICAR–National Rice Research Institute, Cuttack (Odisha): India's Oldest Rice Research Institute, Home of Swarna Sub-1, the CR Dhan Varietal Series, Flood-Tolerant Deepwater Rice, Direct-Seeded Rice Agronomy, Rice-Fish-Duck Integrated Farming and the 30,000-Accession National Rice Genebank

The ICAR–National Rice Research Institute (NRRI), headquartered at Bidyadharpur, Cuttack 753006, Odisha on the banks of the Mahanadi river, is the Indian Council of Agricultural Research (ICAR)'s oldest and one of its two flagship institutes for research on rice— the staple foodgrain for roughly two-thirds of India's population and the single largest crop by cultivated area (approximately 45 million hectares) and by production (about 130 million tonnes a year). NRRI was set up in 1946 as the Central Rice Research Institute (CRRI) — a year before Indian independence — making it the very first crop-specific national research institute created for the country. Its founding was a direct policy response to the Bengal famine of 1943 and the strategic need for a dedicated national capability on rice for eastern-India ecosystems. In 2014, as part of ICAR's institute restructuring, CRRI was renamed to the National Rice Research Institute (NRRI). NRRI is the sister institute of IIRR Hyderabad (which today coordinates AICRIP) and works alongside IARI New Delhi, NIPHM and the SAUs of eastern India; its outputs feed the rice sub-mission of the National Food Security Mission (NFSM), the Bringing Green Revolution to Eastern India (BGREI) programme, the paddy leg of Minimum Support Price procurement, and India's status as the world's largest rice exporter.

At a glance

• Body type: Central research institute of the Indian Council of Agricultural Research (ICAR), under DARE / MoAFW.
• Founded: 1946 as the Central Rice Research Institute (CRRI); renamed National Rice Research Institute (NRRI) in 2014. The first crop-specific national research institute created for India.
• Headquarters: Bidyadharpur, Cuttack 753006, Odisha, on the banks of the Mahanadi.
• Regional research stations: Regional Rainfed Lowland Rice Research Station (RRLRRS), Gerua, Assam; Central Rainfed Upland Rice Research Station (CRURRS), Hazaribagh, Jharkhand.
• Parent ministry: Ministry of Agriculture & Farmers Welfare, Government of India (via DARE / ICAR).
• Mandate: basic and strategic research on rice — genetic resources; rice-based cropping systems; rainfed lowland, upland, coastal saline and deep-water rice; hybrid rice; direct-seeded rice (DSR); climate-resilient and bio-fortified rice.
• Coordinated project lineage: historically anchored the All India Coordinated Rice Improvement Project (AICRIP) from its 1965 launch; AICRIP coordination shifted to the Directorate of Rice Research (now IIRR Hyderabad) in the 1970s; NRRI remains a lead centre.
• Flagship varieties: the CR Dhan series (CR Dhan 300 aerobic, CR Dhan 200 drought-tolerant, CR Dhan 500 including CR Dhan 505 deep-water / flood-tolerant, CR Dhan 800 aromatic including CR Dhan 907 "Mukul"), the Odisha staples Naveen (CR-749-20-2), Pooja and Pratikshya, the bio-fortified CR Dhan 310 (high protein) and CR Dhan 315 (iron / zinc), plus DRR Dhan varieties jointly with IIRR.
• Landmark joint release: Swarna Sub-1 — the flood-tolerant Swarna carrying the Sub1A submergence-tolerance gene, released jointly with IRRI in 2009.
• National Rice Genebank: over 30,000 accessions of cultivated, wild and landrace rice — one of the largest working rice collections in the world.
• Sister institute: ICAR-IIRR (Indian Institute of Rice Research), Rajendranagar, Hyderabad — the Deccan-plateau ICAR flagship for rice, current AICRIP coordinator.
• Website: nrri.icar.gov.in.

Why CRRI / NRRI exists — the Bengal famine legacy

NRRI's founding story is inseparable from the Bengal famine of 1943, one of the worst humanitarian catastrophes of the 20th century, in which an estimated 2–3 million people died in undivided Bengal from acute rice shortages driven by a combination of cyclone damage to the aman rice crop, wartime supply disruption, rice price speculation and colonial-era policy failures. In its immediate aftermath, the Government of India — anticipating the transition to independence and confronting the political reality that rice self-sufficiency was a national-security requirement, not a commercial choice — decided to create a dedicated national research capability on rice. The Central Rice Research Institute (CRRI) was established at Cuttack in 1946, a year before independence, on the banks of the Mahanadi at Bidyadharpur — placing it deliberately in the humid eastern-Indian rice belt, adjacent to the Mahanadi delta's flood-prone and coastal-saline rice tracts and to the tribal upland rice ecologies of Odisha, Jharkhand and Chhattisgarh, where the rice problem was hardest. CRRI became the first crop-specific national research institute in India's history — predating the Indian Council of Agricultural Research's restructuring, the Green Revolution and the entire post-independence build-out of national agricultural research institutions. Its 2014 renaming to NRRI was cosmetic; the institutional continuity from 1946 to today is unbroken.

Location — Cuttack, the Mahanadi and the eastern-India rice belt

NRRI sits at Bidyadharpur, Cuttack 753006, Odisha, on the northern bank of the Mahanadi river a few kilometres from the historic city of Cuttack. The location matters for the science: the Cuttack campus is embedded in the humid-tropical east-coast rice ecology, has direct access to the Mahanadi delta's flood-prone and coastal-saline rice tracts, and is a short field trip from the tribal upland rice ecologies of the Eastern Ghats and the Chhotanagpur plateau spilling in from Jharkhand and Chhattisgarh. Odisha itself is one of India's largest rice producers, cultivating rice on approximately 4.4 million hectares across three seasons (autumn, winter and summer) and multiple ecologies (irrigated, rainfed shallow-lowland, semi-deep, deep-water, coastal saline, upland). This geographic proximity to the rice problem — rather than being sited on an urban university campus far from farmers' fields — is a deliberate CRRI/NRRI design choice.

Regional research stations — matching Indian rice ecologies

Indian rice is not one crop — it is a family of crops grown across radically different water regimes, soil types and altitudes. NRRI therefore runs two regional research stations, each matched to a rice ecology that the Cuttack HQ alone cannot represent:

• Regional Rainfed Lowland Rice Research Station (RRLRRS), Gerua, Assam: covers the rainfed shallow-lowland and semi-deep rice ecologies of the Brahmaputra valley and the North-East — a region with 2,000–3,000 mm annual rainfall, prolonged monsoon flooding, and rice cultivars adapted to standing water 25–50 cm deep. Research at Gerua focusses on rainfed-lowland variety development, submergence and stagnant flooding tolerance, disease and pest management under humid North-Eastern conditions, and rice-fish integration.
• Central Rainfed Upland Rice Research Station (CRURRS), Hazaribagh, Jharkhand: covers the rainfed upland rice ecology of the Chhotanagpur plateau — laterite and red soils, monsoon-only rainfall, direct-seeded upland cultivation, tribal farming systems and severe drought-vulnerability. CRURRS Hazaribagh develops short-duration, drought-tolerant upland rice varieties (the CR Dhan 200 series draws heavily on this work), aerobic-rice packages and integrated crop-livestock-tree systems for tribal farmers.

Between the Cuttack HQ (humid coastal delta, deep-water, coastal saline), Gerua (Brahmaputra valley rainfed lowland) and Hazaribagh (Chhotanagpur upland), NRRI has direct research presence in the three dominant rainfed rice ecologies of eastern India — and, together with its partnership with IIRR Hyderabad, covers the full spectrum of Indian rice systems.

Research divisions and thrust areas

NRRI is organised into research divisions that between them cover the full rice value chain from wild germplasm to farmer household income:

• Crop Improvement Division — conventional and molecular breeding for yield, grain quality, biotic and abiotic stress tolerance and biofortification; the base for the CR Dhan varietal series, Odisha staples and the Sub1-introgressed flood-tolerant lines.
• Crop Production Division — agronomy, nutrient management, water management, weed management, Direct Seeded Rice (DSR), System of Rice Intensification (SRI), aerobic rice and rice-based cropping systems.
• Crop Protection Division — plant pathology, entomology and nematology; blast, bacterial leaf blight, sheath blight, brown planthopper, stem borer, gall midge, rice tungro virus and rice root nematode.
• Plant Physiology and Biochemistry Division — photosynthesis efficiency, submergence physiology (Sub1A gene action), drought physiology, heat tolerance and grain-filling.
• Biotechnology Division — marker-assisted selection, molecular characterisation of the 30,000-accession genebank, gene-editing (regulatory-permitted work) and genomics-assisted breeding.
• Social Sciences Division — rice economics, adoption studies, Farmer FIRST, TSP / SCSP outreach in tribal Odisha and Jharkhand villages, and farmer-training programmes.
• Genetic Resources / National Rice Genebank — collection, characterisation, evaluation and medium-term conservation of Oryza germplasm.

The CR Dhan varietal series and Odisha staples

NRRI's plant-breeding programme has released, or jointly released via AICRIP, one of the largest rice varietal portfolios of any single research institute in the world. The CR Dhan family — the CRRI / NRRI variety naming convention — is organised into ecology- and trait-based sub-series:

• CR Dhan 200 series — drought-tolerant rainfed uplands: short-duration, drought-escape and drought-tolerant lines for the Chhotanagpur plateau, Odisha uplands and similar rainfed-upland geographies, drawing heavily on CRURRS Hazaribagh work.
• CR Dhan 300 series — aerobic rice: lines for unpuddled, non-flooded upland-style cultivation with major water savings versus classic puddled transplanting, useful for water-scarce peri-urban and light-textured sites.
• CR Dhan 500 series — deep-water and flood-tolerant: varieties adapted to standing water depths of 50–100 cm and longer submergence events, notably CR Dhan 505 — for the deep-water rice tracts of coastal Odisha, north Bihar and West Bengal.
• CR Dhan 800 series — aromatic / scented short-grain: non-basmati aromatic short-grain rices for the domestic fine-grain market, including CR Dhan 907 (Mukul) with an aromatic non-basmati grain quality.
• Bio-fortified releases: CR Dhan 310— a high-protein rice with grain protein content notably higher than conventional cultivars, one of the world's first bio-fortified high-protein publicly bred rice varieties; CR Dhan 315 — an iron- and zinc-enriched rice variety aimed at addressing micronutrient malnutrition through the everyday staple.
• Odisha long-standing staples: Naveen (CR-749-20-2) — a widely-grown medium-duration variety across coastal Odisha; Pooja and Pratikshya — two other CRRI releases that became state staples in Odisha and neighbouring West Bengal for decades. These varieties, released in the 1980s–1990s, remain in farmer cultivation and in state seed multiplication chains today.
• DRR Dhan varieties: a number of DRR Dhan releases are joint AICRIP outputs involving NRRI Cuttack and IIRR Hyderabad; the two institutes work together on the pan-India varietal pipeline.

Swarna Sub-1 and the flood-tolerant rice revolution

Perhaps the single most transformative varietal release of the last two decades from any Indian rice institute is Swarna Sub-1 — the flood-tolerant version of the mega-variety Swarna, released jointly by NRRI Cuttack and the International Rice Research Institute (IRRI) (Los Baños, Philippines) in 2009. The science:

• The problem: flash flooding in the rainfed lowland rice belts of coastal Odisha, north Bihar, eastern Uttar Pradesh, West Bengal and parts of Assam routinely inundates standing rice for 7–15 days during monsoon breaks. Conventional rice varieties die within a week under complete submergence, producing 30–70% yield loss and, in bad years, complete crop failure across millions of hectares.
• The gene: the Sub1A QTL, first identified in the Indian landrace FR13A, encodes an ethylene-responsive transcription factor that during submergence suppresses shoot elongation, conserves stem carbohydrates and shuts down non-essential metabolism. Plants carrying Sub1A can survive 10–15 days of complete submergence and resume growth once the flood recedes — with 50–80% of control yield preserved.
• The variety:using marker-assisted backcrossing, NRRI–IRRI teams introgressed Sub1A from FR13A into the popular eastern-India mega-variety Swarna without disturbing Swarna's grain quality, maturity or yield potential in non-flood years. The result — Swarna Sub-1 — combines farmer-preferred Swarna with survivable flood tolerance.
• The impact: Swarna Sub-1 was rapidly adopted across the flash-flood-prone rice belts, with millions of farmers planting it within a few years of release. Where it replaced conventional Swarna, farmers routinely retained harvestable grain in years when neighbouring conventional fields were wiped out. Independent socio-economic studies documented adoption rates that placed Swarna Sub-1 among the fastest-adopted improved rice varieties in Indian history.
• The follow-on: NRRI followed Swarna Sub-1 with Sub1-introgressed versions of other locally preferred cultivars, extending the flood-tolerance package across the eastern rice belt and into other market-preferred grain types.

Direct Seeded Rice, DSR agronomy and water-saving rice

Conventional puddled transplanted rice — the standard technique across most of Indian rice cultivation — uses 3,000–5,000 litres of water per kilogram of rice produced, is highly labour-intensive (nursery raising, uprooting, transplanting) and generates methane emissions from continuous field flooding. NRRI has been one of the principal ICAR institutes driving the transition to Direct Seeded Rice (DSR):

• DSR agronomy: seed is drilled directly into a prepared (usually non-puddled) field, skipping nursery raising, puddling and transplanting. DSR cuts irrigation-water requirement by 20–30%, labour by 30–50% and methane emissions substantially, while allowing timely planting and improved crop rotation options.
• Variety development: NRRI has bred DSR-suitable varieties with improved early-vigour, anaerobic germination (for wet-DSR under standing water) and appropriate maturity for the DSR sowing window.
• Integrated weed management:DSR's major constraint is early weed competition — without the smothering effect of ponded water, weeds are more competitive than in transplanted rice. NRRI has standardised integrated weed management (pre-emergence + post-emergence herbicide + mechanical weeding + stale seedbed) packages tuned to Indian conditions.
• Aerobic rice and SRI: beyond DSR, NRRI also works on aerobic rice (grown as an upland crop without ponded water), the System of Rice Intensification (SRI — wider spacing, younger seedlings, alternate wetting and drying), and rice-based integrated farming systems, all of which reduce the water and energy footprint of rice.

Rice-fish-duck integrated farming for coastal Odisha and Sundarbans

NRRI has been a national leader in rice-based integrated farming systems for the humid-tropical east-coast rice belt, where periodic inundation of paddy fields is compatible with fish culture and duck rearing on the same field. The models:

• Rice-fish integration: deep-water and rainfed lowland rice fields are stocked with rohu, catla, mrigal, common carp and locally preferred species; refuges (peripheral trenches or a central pond) allow fish to survive dry periods. Fish add a protein income stream on top of the rice yield.
• Rice-duck integration: ducks released into standing rice at appropriate crop stages provide biological control of insect pests (they eat brown planthoppers, stem borer larvae, snails), suppress weeds by trampling and grazing, fertilise the crop through their droppings and add a poultry income stream.
• Rice-fish-duck-vegetable integration: a four-component system in which the peripheral bunds are used for vegetable cultivation (banana, papaya, brinjal, chilli) — optimising the small-farm income envelope and household nutrition.
• Where they apply: the Mahanadi delta, coastal Odisha, the Sundarbans delta of West Bengal, the Brahmaputra valley (in partnership with NRRI Gerua) and similar humid-tropical east-coast geographies. Per-hectare income under these models is typically 2–3x that of rice monoculture, protein intake improves for the household, and external-input demand is lower.

The National Rice Genebank at NRRI Cuttack

NRRI Cuttack houses the National Rice Genebank, one of the largest working collections of rice genetic resources in the world — with over 30,000 accessions spanning:

• Cultivated Oryza sativa: both indica and japonica ecotypes; released Indian varieties from 1946 onwards; IRRI-derived breeding lines; local and international elite germplasm.
• Wild Oryza species: Oryza rufipogon (a wild-progenitor of cultivated rice, a major source of biotic- and abiotic-stress genes), O. nivara, O. officinalis, O. eichingeri and other wild species — biological reservoirs for future breeding.
• Traditional Indian landraces: including several thousand Odisha, Jharkhand, Chhattisgarh, North-Eastern and Sundarbans landraces that would otherwise have been lost as farmers shifted to improved varieties — a national biological heritage.

The accessions are conserved under medium-term storage at NRRI Cuttack, with duplicate long-term storage under NBPGRat New Delhi, and are systematically characterised for morphological, agronomic, quality and stress-tolerance traits. The phenotypic-genotypic data feeds NRRI's own breeding programme, other ICAR institutes and State Agricultural Universities, private-sector breeding under standard germplasm-exchange terms, and international rice research through IRRI. The genebank is the biological foundation on which future breeding for climate resilience, biofortification, pest / disease resistance and quality traits ultimately rests.

AICRIP anchoring and the NRRI–IIRR partnership

The All India Coordinated Rice Improvement Project (AICRIP)— India's largest and oldest crop-specific coordinated research project — was launched in 1965 with NRRI (then CRRI) Cuttack as the historical anchor. In the 1970s, as AICRIP's coordinating workload grew and as Hyderabad emerged as a strategic Deccan-plateau centre for rice coordination, ICAR set up the Directorate of Rice Research (DRR) at Rajendranagar, Hyderabad in 1975 and transferred AICRIP coordination to it. DRR was elevated to the Indian Institute of Rice Research (IIRR) in 2014. Today, NRRI Cuttack and IIRR Hyderabad are the two co-lead ICAR flagship institutes for rice; IIRR carries the AICRIP coordination role while NRRI carries the lead role on eastern-India rice ecologies (rainfed lowland, upland, deep-water, coastal saline), on the National Rice Genebank, and on integrated rice-fish-duck farming systems. Every candidate rice variety released nationally passes through the AICRIP IVT / AVT pipeline coordinated by IIRR, in which NRRI Cuttack is one of the largest and oldest contributing centres.

BGREI — Bringing Green Revolution to Eastern India

The Bringing Green Revolution to Eastern India (BGREI) programme is a dedicated NFSM-Rice sub-window aimed at raising rice productivity in the seven eastern states — Assam, Bihar, Chhattisgarh, Jharkhand, Odisha, eastern Uttar Pradesh and West Bengal— where rice yields had historically lagged behind the Green-Revolution north-west despite the region's dominant share of India's rice-growing area and rice-consuming population. BGREI is anchored technically on NRRI-released varieties and packages: submergence-tolerant Swarna Sub-1 and follow-on Sub1 varieties for flash-flood tracts; drought-tolerant CR Dhan 200 series and DRR Dhan 58 for the Chhotanagpur uplands; deep-water CR Dhan 500 series and CR Dhan 505 for the deep-water tracts of coastal Odisha and north Bihar; Odisha staples Naveen, Pooja and Pratikshya for coastal Odisha irrigated systems; rice-fish-duck integrated farming models for the Mahanadi and Sundarbans deltas; and DSR agronomy packages for water-scarce sub-regions. BGREI implementation flows through the state agriculture departments of the seven eastern states, with NRRI providing the technical package, on-farm demonstration support and farmer-training.

Connections to Central schemes and cooperating institutes

• NFSM — National Food Security Mission: the Centrally Sponsored Scheme whose NFSM-Rice sub-mission runs on NRRI / AICRIP-notified varieties and packages in eastern India; the BGREI sub-window is technically anchored on NRRI outputs.
• MSP — Minimum Support Price and paddy procurement: paddy is the single largest commodity procured at MSP by the Food Corporation of India and state procurement agencies — Odisha, West Bengal, Bihar, Chhattisgarh and eastern UP all procure NRRI-lineage paddy at substantial volumes every kharif season.
• PM-KISAN: the direct-transfer income-support scheme complements NRRI-driven varietal / agronomy improvements in eastern-Indian rice belts with cash-flow support to smallholder rice farmers.
• PMFBY: crop insurance on rice cushions farmers against the residual risk that survives even flood-tolerant Swarna Sub-1 — bad monsoons, cyclones and pest outbreaks.
• IIRR (Rajendranagar, Hyderabad): the sister ICAR flagship for rice; current AICRIP coordinator; co-developer of DRR Dhan varieties and joint contributor to the IIRR–NRRI division of labour on Indian rice ecologies.
• IARI (Pusa, New Delhi):the ICAR flagship crop-sciences Deemed University; source of the Pusa Basmati series that dominates India's basmati export basket, complementing NRRI's eastern-India non-basmati and short-grain aromatic focus.
• NIPHM (Rajendranagar, Hyderabad): operationalises IPM packages for rice pests and diseases — blast, sheath blight, bacterial leaf blight, brown planthopper, stem borer — through residential courses for state plant-protection officers.
• Pest identification and Integrated Pest Management: NRRI research on rice blast, sheath blight, brown planthopper, stem borer, gall midge and rice tungro virus feeds directly into the pest-identification and IPM extension packages recommended for Indian rice farmers.
• NBPGR (New Delhi): long-term duplicate conservation of the NRRI 30,000+ rice genebank collection; germplasm-exchange partner.
• Soil Health Card: NRRI-recommended nutrient-management packages for rice draw on Soil Health Card-based nutrient prescriptions at the plot level.
• Nano-fertilizers: NRRI has evaluated nano-urea and nano-DAP in rice cropping systems for yield and nitrogen-use-efficiency effects.
• ATARI: the ICAR zonal agricultural technology application research institutes propagate NRRI packages to district KVKs across eastern India.

Related pages

References

• nrri.icar.gov.in — NRRI Cuttack official portal: research divisions, regional research stations at Gerua (Assam) and Hazaribagh (Jharkhand), CR Dhan variety catalogue, National Rice Genebank, integrated rice-fish-duck farming, Swarna Sub-1 and follow-on Sub1 releases, and NRRI history from CRRI 1946 to today.
• icar.org.in — Indian Council of Agricultural Research — parent institution of NRRI.
• nfsm.gov.in — National Food Security Mission — the Central-scheme delivery envelope for NRRI / AICRIP-notified rice varieties, including the BGREI eastern-India window.
• irri.org — International Rice Research Institute, Los Baños, Philippines — CGIAR partner on Swarna Sub-1 and Sub1A introgression, and long-standing collaborator on rice genomics and stress-tolerant breeding.
• harvestplus.org — HarvestPlus, the international biofortification programme; partner on bio-fortified rice releases.
• Press Information Bureau (PIB) — releases on NRRI variety notifications, Swarna Sub-1 rollout, BGREI progress and India's rice production and export performance.

Frequently asked questions

What is NRRI and when was it founded?

NRRI — the ICAR–National Rice Research Institute — is India's oldest and one of its two ICAR flagship institutes dedicated to rice research. It was established in 1946 at Cuttack, Odisha, as the Central Rice Research Institute (CRRI), predating Indian independence by a year and making it the first crop-specific national research institute created for the country. CRRI was set up in the immediate aftermath of the Bengal famine of 1943 as a direct policy response to the need for a dedicated national capability on rice — the staple foodgrain for over two-thirds of India's population. In 2014, as part of ICAR's institute restructuring, CRRI was renamed to the National Rice Research Institute (NRRI). The institute reports to ICAR under the Department of Agricultural Research and Education (DARE), Ministry of Agriculture & Farmers Welfare, Government of India.

Where is NRRI located and what are its regional research stations?

NRRI's main campus is at Bidyadharpur, Cuttack 753006, Odisha, on the banks of the Mahanadi river — a location that gives the institute direct access to the humid-tropical east-coast rice ecology, coastal saline tracts, deep-water and flood-prone rice lands of the Mahanadi delta, and the neighbouring Odisha uplands. Because Indian rice ecologies are extraordinarily varied, NRRI runs two regional research stations tuned to distinct rainfed rice geographies: (1) the Regional Rainfed Lowland Rice Research Station (RRLRRS) at Gerua, Assam — for the rainfed shallow-lowland and semi-deep rice tracts of the Brahmaputra valley and the North-East; and (2) the Central Rainfed Upland Rice Research Station (CRURRS) at Hazaribagh, Jharkhand — for the rainfed upland rice ecology of the Chhotanagpur plateau, tribal farming systems and drought-prone laterite soils. Together, the Cuttack HQ and the two regional stations cover irrigated, rainfed shallow-lowland, semi-deep, deep-water, coastal saline and rainfed upland rice.

What is NRRI's research mandate?

NRRI's mandate is basic, strategic and applied research on rice, spanning the full range of Indian rice ecologies. It runs breeding programmes across irrigated, rainfed lowland, upland, coastal saline, deep-water and flood-prone systems; conducts research on hybrid rice, direct-seeded rice (DSR) agronomy and rice-based cropping systems; maintains one of the world's largest rice genetic-resource collections (over 30,000 accessions in its National Rice Genebank); works on abiotic-stress tolerance (submergence via the Sub1A gene, drought, heat, salinity, cold); addresses biotic-stress management (blast, bacterial leaf blight, sheath blight, brown planthopper, stem borer, gall midge); leads bio-fortification (high-protein and iron/zinc-enriched CR Dhan lines); and develops integrated rice-based farming systems such as rice-fish, rice-duck and rice-fish-duck-vegetable integration for coastal Odisha and the Sundarbans. NRRI historically anchored the All India Coordinated Rice Improvement Project (AICRIP) — launched in 1965 — before AICRIP coordination shifted to the Directorate of Rice Research (now IIRR Hyderabad) in the 1970s.

What are the CR Dhan and Swarna Sub-1 varieties?

NRRI's plant-breeding programme has released a large portfolio of rice varieties under the CR Dhan family, organised into sub-series by ecology and trait. The CR Dhan 300 series covers aerobic rice for water-scarce systems; the CR Dhan 200 series targets drought-tolerant rainfed uplands; the CR Dhan 500 series (including CR Dhan 505) is the deep-water and flood-tolerant series for the flood-prone rice tracts of eastern India; and the CR Dhan 800 series carries scented / aromatic short-grain rices, including CR Dhan 907 (Mukul). Long-standing Odisha staples released from the Cuttack campus — Naveen (also known as CR-749-20-2), Pooja and Pratikshya — have been widely grown across Odisha and the eastern-Indian coastal belt for decades. In collaboration with IRRI (Los Baños), NRRI released Swarna Sub-1, a flood-tolerant version of the mega-variety Swarna carrying the Sub1A submergence-tolerance gene introgressed by marker-assisted selection; Swarna Sub-1 can survive 10–15 days of complete submergence, transforming rice cultivation in flash-flood-prone tracts of Odisha, Bihar, eastern UP and West Bengal.

What is the Sub1A gene and why did Swarna Sub-1 change the eastern-India rice map?

The Sub1A gene is a submergence-tolerance quantitative-trait locus originally identified in an Indian landrace, FR13A. It encodes an ethylene-responsive transcription factor that suppresses shoot elongation and carbohydrate consumption during complete submergence, allowing the plant to survive under water for 10–15 days and resume growth once the flood recedes. In collaboration with the International Rice Research Institute (IRRI), NRRI Cuttack used marker-assisted backcrossing to introgress Sub1A into the popular mega-variety Swarna — the resulting Swarna Sub-1 combines Swarna's grain quality and yield with survivable flood tolerance. Swarna Sub-1 was released in India in 2009 and rapidly adopted across the flash-flood-prone rice belts of coastal Odisha, north Bihar, eastern Uttar Pradesh, West Bengal and parts of Assam — regions where farmers routinely lost 30–70% of the standing crop in mid-season inundations. NRRI followed up with Sub1-introgressed versions of other locally preferred cultivars (including IR64 Sub-1, Samba Mahsuri Sub-1 and CR Dhan 801 Sub-1), extending the flood-tolerance package across the eastern rice belt.

What is NRRI's role in Direct Seeded Rice (DSR) and rice-fish-duck integrated farming?

NRRI has been one of the principal ICAR institutes standardising Direct Seeded Rice (DSR) agronomy for eastern India — the largest single opportunity to save irrigation water, cut labour cost and reduce methane emissions in Indian rice cultivation. NRRI's DSR research covers seed treatment, machine drilling on non-puddled land, integrated weed management (DSR's main constraint), nutrient scheduling and DSR-suitable varieties with anaerobic-germination and early-vigour traits. On the integrated-farming-system side, NRRI has developed rice-fish, rice-duck and rice-fish-duck-vegetable models for the coastal Odisha and Sundarbans deltas — where periodic inundation of paddy fields is compatible with fish culture (rohu, catla, mrigal, common carp) and duck rearing on the same field. These integrated systems raise per-hectare income 2–3x over rice monoculture, improve household protein intake, provide biological control of insect pests (ducks eat brown planthoppers and stem borer larvae) and lower external-input demand. NRRI's integrated-farming research feeds directly into the Bringing Green Revolution to Eastern India (BGREI) programme and Odisha state extension.

What is NRRI's National Rice Genebank and how big is it?

NRRI at Cuttack houses one of the world's largest working collections of rice genetic resources — the National Rice Genebank, with over 30,000 accessions of cultivated Oryza sativa (both indica and japonica types), wild Oryza species (O. rufipogon, O. nivara, O. officinalis, O. eichingeri and others), traditional Indian landraces, released Indian varieties, IRRI-derived breeding lines and geographic collections from tribal upland Odisha, the North-East, the Sundarbans and the Chhotanagpur plateau. The genebank is maintained under medium-term storage at NRRI Cuttack, with duplicate long-term storage under NBPGR (see /nbpgr) at New Delhi. Accessions are systematically characterised for morphological, agronomic, quality and stress-tolerance traits, and the phenotypic-genotypic data is used by NRRI's own breeders, by other ICAR institutes, State Agricultural Universities and the private sector (under standard germplasm-exchange terms). The collection includes several thousand endangered traditional Odisha landraces conserved from disappearance — a national biological heritage that also underpins future breeding for climate resilience, biofortification and pest / disease resistance.

How does NRRI's work connect to NFSM-Rice, BGREI, MSP paddy procurement and India's rice export leadership?

NRRI is the R&D pipeline that feeds Central rice programmes in eastern India in particular. Varieties released from NRRI Cuttack and its regional stations become the recommended-variety list for the rice sub-mission of the National Food Security Mission (see /nfsm) in Odisha, Jharkhand, Bihar, West Bengal, Assam and the North-East, and are propagated through state seed corporations and the Mega Seed Project on Rice. The Bringing Green Revolution to Eastern India (BGREI) programme — a dedicated NFSM sub-window aimed at raising rice productivity in the seven eastern states (Assam, Bihar, Chhattisgarh, Jharkhand, Odisha, eastern UP and West Bengal) — is anchored technically on NRRI-released varieties, integrated packages and rice-fish-duck models. Paddy is the single largest commodity procured at Minimum Support Price (see /msp), and Odisha alone procures several million tonnes of NRRI-lineage paddy every kharif under the state civil-supplies-plus-FCI system. On the export side, India has been the world's largest rice exporter for more than a decade, and NRRI's non-basmati and aromatic short-grain lines contribute to the export basket that flows to Africa, the Middle East and South-East Asia through APEDA-notified exporters.

The 1946 founding as CRRI, the 2014 renaming to NRRI, the Bidyadharpur (Cuttack 753006) headquarters on the Mahanadi, the Gerua (Assam) and Hazaribagh (Jharkhand) regional research stations, the CR Dhan varietal series and Odisha staples (Naveen, Pooja, Pratikshya), the CR Dhan 310 high-protein and CR Dhan 315 iron / zinc bio-fortified releases, the NRRI-IRRI joint Swarna Sub-1 release carrying the Sub1A submergence-tolerance gene, the National Rice Genebank of 30,000+ accessions, the historical AICRIP anchoring at CRRI and its post-1975 co-coordination with IIRR Hyderabad, the rice-fish-duck integrated farming models, and the BGREI / NFSM-Rice connections above draw on publicly available material on nrri.icar.gov.in, icar.org.in, nfsm.gov.in, irri.org and PIB releases. Divisional structure, ongoing projects and variety notifications are periodically revised — confirm current details on nrri.icar.gov.in before planning research visits, germplasm requests or field-scale variety deployment.