The Role of Traditional Knowledge in Conservation of Native Plant Genetic Resources

For thousands of years, indigenous and local farming communities have been the unsung guardians of the world’s plant genetic diversity. Long before formal gene banks or laboratory-based breeding programmes existed, these communities were carefully selecting, saving, and sharing seeds – building a living reservoir of genetic material that modern agriculture increasingly depends on. Their accumulated wisdom about which plants resist drought, which tolerate local pests, and which thrive in specific soils forms the backbone of what we now call plant genetic resource conservation.

What are plant genetic resources and why do they matter? 🔗

Plant genetic resources refer to the total genetic diversity found within cultivated crops, their wild relatives, and other useful plant species. This diversity – stored in seeds, roots, tubers, and living plant populations – provides the raw material for breeding new crop varieties that can cope with diseases, climate shifts, and changing food demands. The Food and Agriculture Organization (FAO) estimates that humans have historically used around 10,000 plant species for food, yet today just four crops – maize, wheat, rice, and potatoes – supply roughly 60% of the world’s dietary energy. Over the past century, more than 75% of the crop varieties that farmers once cultivated have disappeared. This genetic erosion makes the remaining diversity, much of it maintained by traditional farming communities, critically important for future food security.

Traditional knowledge: the foundation of plant conservation 🔗

Traditional knowledge, in the context of plant genetic resources, refers to the cumulative body of practices, skills, and beliefs that indigenous and local communities have developed through generations of direct interaction with their environment. This is not abstract or theoretical knowledge – it is deeply practical. It covers seed selection methods, soil management techniques, pest control strategies, and an intimate understanding of local microclimates. The Convention on Biological Diversity (CBD), adopted in 1992, formally recognised this knowledge as essential to the conservation and sustainable use of biological diversity.

What makes traditional knowledge so valuable is its place-based specificity. A tribal farmer in Odisha’s Koraput district, for instance, doesn’t simply grow rice – she maintains distinct varieties suited to different field elevations, soil moisture levels, and seasonal rainfall patterns. Each variety has been tested across generations. This kind of localised, experiential understanding of crop performance cannot easily be replicated in a laboratory setting.

Landraces: living libraries of genetic diversity 🔗

Landraces are locally adapted crop varieties that have been developed, maintained, and selected by farming communities over many generations. Unlike modern commercial cultivars bred for uniformity and maximum yield under controlled conditions, landraces are genetically heterogeneous. This internal diversity is precisely what gives them resilience – the ability to perform reliably across variable and unpredictable growing environments.

What makes landraces different from modern varieties? 🔗

Modern high-yielding varieties (HYVs) are typically developed for specific input conditions: adequate irrigation, synthetic fertilisers, and pesticide application. Remove those conditions, and their performance often drops sharply. Landraces, by contrast, have been shaped by the environments they grow in. They carry genes for traits like drought tolerance, flood resistance, pest and disease resistance, and enhanced nutritional content – traits that formal breeding programmes now urgently seek to incorporate into new cultivars.

A study published in Scientific Reports documented 671 landraces belonging to 60 different crops in the Central Western Ghats region of Karnataka, India. Custodian farmers there were found to conserve vegetables, cereals, pulses, fruits, spices, tubers, and plantation crops – each landrace maintained because it served a specific local need, whether culinary, medicinal, cultural, or economic.

India’s tribal communities as custodians of crop diversity 🔗

India is a globally recognised centre of crop diversity, and its tribal communities play a central role in maintaining that diversity on-farm. In Odisha’s Jeypore tract within Koraput district – a well-known agrobiodiversity hotspot – tribal communities such as the Kondh, Paraja, and Gadaba practise landrace-based cultivation and on-farm seed conservation. Community seed banks like the Desi Bihan Surakhya Samiti have documented and conserved over 925 local paddy germplasm accessions since 2014. These are not museum artefacts; they are actively grown, shared, and improved by farmers every season.

Wild relatives of crops: the untapped genetic treasury 🔗

Beyond cultivated landraces, indigenous communities also maintain critical knowledge about crop wild relatives (CWRs) – the wild ancestors and cousins of domesticated crops that still grow in forests, grasslands, and marginal habitats. These wild plants often harbour genes for traits that have been lost during the domestication process: resistance to specific diseases, tolerance of extreme temperatures, or the ability to grow in nutrient-poor soils.

Traditional farmers know where these wild relatives grow, how they behave in different seasons, and sometimes how they can be crossed with cultivated crops to introduce useful traits. For example, wild rice species found in India’s northeastern states carry genes for resistance to bacterial blight and tolerance to deep-water flooding – traits that modern rice breeders have actively sought for developing climate-resilient varieties.

How traditional selection practices work 🔗

Indigenous plant selection is a systematic process, even though it operates outside the framework of formal genetics. Farmers observe plant performance over multiple seasons, noting which individual plants survive drought, resist local insects, produce more grain, or store better after harvest. Seeds from these superior performers are saved, while poor performers are discarded. Over time, this consistent directional selection produces populations that are well-adapted to local conditions.

Key traits selected by traditional farmers 🔗

The traits that indigenous farmers prioritise often differ from those targeted by commercial breeding. While commercial breeders focus heavily on yield and uniformity, traditional farmers tend to select for a broader set of characteristics: drought resistance, enabling crops to survive erratic rainfall; disease and pest tolerance, reducing the need for chemical inputs; nutritional quality, ensuring food provides adequate vitamins and minerals; storage durability, critical in areas without cold-chain infrastructure; and culinary suitability, matching the taste, texture, and cooking properties valued in local food traditions.

This multi-trait selection explains why landraces often outperform modern varieties in stressful or low-input environments, even if they yield less under optimised conditions.

The role of traditional knowledge in climate resilience 🔗

Climate change is intensifying the challenges that agriculture faces – more frequent droughts, unpredictable monsoons, new pest and disease pressures, and rising temperatures. In this context, the genetic diversity maintained by traditional farming communities becomes even more valuable. As a Springer publication on plant genetic resources notes, indigenous traditional knowledge has been recognised as a reservoir of information for developing resilience to climate change and for managing natural resources under environmental stress.

Communities that maintain diverse crop portfolios are inherently better buffered against climate shocks. If one variety fails due to unusual weather, others in the collection may still produce a harvest. This built-in insurance mechanism is something that monoculture-dependent modern farming systems fundamentally lack.

International frameworks protecting traditional knowledge 🔗

Several international agreements now formally recognise the role of indigenous communities in conserving plant genetic resources and seek to protect their rights over this knowledge.

The International Treaty on Plant Genetic Resources for Food and Agriculture (ITPGRFA) 🔗

Adopted in 2001 and enforced since 2004, the ITPGRFA (also known as the Plant Treaty) is the most significant global agreement in this space. It explicitly acknowledges the enormous contributions of indigenous peoples, local communities, and farmers in conserving and developing plant genetic resources over millennia. Article 9 of the Treaty establishes Farmers’ Rights, calling on national governments to protect traditional knowledge relevant to plant genetic resources, ensure equitable participation in benefit-sharing, and involve farmers in national decision-making on conservation matters. The Treaty also states that nothing in its provisions should limit farmers’ rights to save, use, exchange, and sell farm-saved seeds.

The Convention on Biological Diversity (CBD) and the Nagoya Protocol 🔗

The CBD, signed in 1992, was the first legally binding treaty to recognise the connection between biodiversity conservation and traditional knowledge. Its Article 8(j) requires signatory nations to respect, preserve, and maintain the knowledge of indigenous communities relevant to conservation. The Nagoya Protocol, adopted in 2010, specifically promotes fair and equitable benefit-sharing arising from the use of traditional knowledge associated with genetic resources.

WIPO Treaty on Genetic Resources and Traditional Knowledge 🔗

In May 2024, after more than two decades of negotiations, the World Intellectual Property Organization (WIPO) adopted a new treaty on intellectual property, genetic resources, and traditional knowledge. This treaty addresses the long-standing problem of biopiracy – where companies patent products based on indigenous knowledge without acknowledgement or compensation to the source communities.

Threats to traditional knowledge systems 🔗

Despite its recognised value, traditional knowledge related to plant genetic resources is under serious threat from multiple directions.

Replacement by high-yielding varieties: The spread of HYVs since the Green Revolution has displaced many landraces from farmers’ fields. When landraces stop being cultivated, the associated knowledge about their management also fades.

Rural-to-urban migration: Younger generations are increasingly moving to cities for employment, severing the intergenerational transfer of farming knowledge. Studies from India’s Western Ghats have identified lack of interest among youth towards traditional agriculture as a key threat to on-farm conservation.

Market pressures: Modern supply chains favour uniform, high-volume produce. Landraces, which are diverse in shape, size, and colour, often face inadequate market access, discouraging farmers from continuing their cultivation.

Biopiracy: The unauthorised appropriation of traditional knowledge and genetic resources by external entities – without consent or benefit-sharing – remains a persistent problem, despite international legal frameworks designed to prevent it.

Bridging traditional knowledge with modern science 🔗

The future of plant genetic resource conservation lies not in choosing between traditional and modern approaches, but in integrating both. Modern genomic tools such as genome-wide association studies (GWAS), marker-assisted selection (MAS), and whole-genome sequencing can identify and map the valuable genes that landraces carry. Research has shown that genes controlling desirable traits like stress tolerance and nutritional quality from landraces can be transferred into elite breeding lines through both conventional and molecular breeding methods.

At the same time, participatory plant breeding – where scientists and farmers collaborate to develop improved varieties – ensures that new cultivars meet the actual needs of farming communities rather than just the priorities of external breeding programmes. Community seed banks, which document and store local landraces while keeping them accessible for planting, represent another effective bridge between traditional conservation and modern germplasm management.

What can be done to strengthen conservation efforts? 🔗

Effective conservation of plant genetic resources through traditional knowledge requires action at multiple levels. Documentation of indigenous crop varieties and their associated knowledge must be prioritised – much of this information exists only in oral traditions and is at risk of being permanently lost. Policy support for custodian farmers, including recognition, financial incentives, and secure access to land, is essential to make on-farm conservation viable. Community seed banks need strengthening with technical and financial support to ensure the diversity they maintain remains accessible for future use. And legal frameworks must be effectively implemented to protect communities from biopiracy while enabling them to benefit from the use of their knowledge and resources.

What do you think? As modern agriculture becomes increasingly dependent on a narrow set of high-yielding crop varieties, how can we ensure that the traditional knowledge of indigenous farming communities – and the genetic diversity they maintain – is not lost? Should custodian farmers receive formal recognition and compensation for their role as the original conservationists of global crop diversity?

References

1. https://www.fao.org/plant-treaty/en
2. https://www.cbd.int/
3. https://www.nature.com/articles/s41598-024-61428-1
4. https://www.frontiersin.org/journals/sustainable-food-systems/articles/10.3389/fsufs.2026.1769950/full
5. https://link.springer.com/chapter/10.1007/978-981-10-0060-7_11
6. https://www.cbd.int/abs/
7. https://esil-sedi.eu/esil-reflection-wipos-new-treaty-on-intellectual-property-genetic-resources-and-traditional-knowledge-a-turning-point-for-indigenous-heritage/
8. https://pmc.ncbi.nlm.nih.gov/articles/PMC10975389/