Food and Drink Industry 20 – 26 July: Ft The Cocoa Research Centre
- Researchers have identified four previously unrecognised cacao lineages growing on Indigenous and smallholder farms across Peru.
Peruvian Gene Hunt Rewrites the Cacao Family Tree
A major genetic study of Peruvian cacao has uncovered four previously unrecognised lineages, providing the global chocolate industry with potentially valuable new material at a time when disease, extreme weather and volatile cocoa prices are placing unprecedented pressure on supply.
Researchers from the Cocoa Research Centre at The University of the West Indies and Universidad Nacional Toribio Rodríguez de Mendoza analysed cacao trees growing across eight departments of Peru.
Their findings, published in the journal PLOS One, suggest that the established genetic map of cacao was missing several important pieces.
The research identified four distinct populations, which have been named Chuncho 1, Chuncho 2, Awajun and Porcelana. These lineages were not created in a laboratory and did not result from genetic engineering.
They were already growing in farmers’ fields, often on Indigenous and smallholder land, where they had survived for generations without being formally characterised.
For an industry confronting serious questions about future supply, this is more than a technical reclassification. Genetic diversity is the foundation from which breeders develop trees capable of withstanding disease, drought, heat and changing environmental conditions.
The discovery therefore provides a potentially important new resource for breeders seeking to create the next generation of resilient, productive and high-quality cacao trees.
Cocoa Supply Under Increasing Pressure
The discovery comes after several difficult years for the cocoa and chocolate markets.
Cocoa prices have repeatedly reached record levels, driven by a combination of poor harvests, flooding, crop disease and increasingly unpredictable weather conditions in major producing regions.
West Africa, which remains central to global cocoa supply, has been particularly exposed to these pressures.
Climate change is making growing conditions less reliable, while diseases can spread rapidly through plantations containing genetically similar trees. These risks are intensified by the global cocoa sector’s dependence on a relatively narrow selection of high-yielding commercial varieties.
When millions of hectares are planted with the same small group of tree types, a disease outbreak, prolonged drought or destructive storm can affect a large proportion of production at the same time.
Uniformity may make commercial cultivation easier in the short term, but it also creates systemic vulnerability.
The Peruvian study offers a reminder that genetic resources capable of addressing some of these problems may already exist. The challenge is to identify, conserve and develop them before they disappear or become diluted through the continued expansion of uniform commercial varieties.
DNA Analysis Across Eight Peruvian Departments
The study was led by Lambert Motilal, genomics team leader at the Cocoa Research Centre in Trinidad and Tobago.
Researchers collected and analysed DNA from 390 wild and semi-wild cacao trees found across eight Peruvian departments. The sample covered a broad geographical area, stretching from the lowlands of Amazonas to the Andean foothills of Cusco.
Using 192 genetic markers, the research team examined how the Peruvian trees related to the 10 major cacao groups identified through earlier genetic research.
The results revealed that the established classification system did not fully capture the diversity growing across Peru. Four populations were sufficiently distinct to be recognised as separate genetic lineages.
The researchers employed several phases of ancestry analysis to reduce the risk of misleading classifications. This was particularly important because earlier studies of cacao genetics have sometimes produced conflicting or incomplete results depending on the samples and statistical methods used.
The team found that Peruvian cacao trees share a degree of common ancestry across the country, but individual regions also carry distinctive genetic signatures.
Samples from Piura and Amazonas were more strongly associated with the newly identified Porcelana population. Trees from Cusco and Ayacucho, meanwhile, showed a greater tendency to cluster around the Chuncho 2 lineage.
These regional differences could be commercially significant. They may allow future conservation and breeding programmes to focus on particular locations when searching for desired characteristics such as flavour, productivity, disease resistance or climate tolerance.
Indigenous Farms Hold Untapped Genetic Resources
One of the most striking elements of the research is where the new lineages were found.
The trees were not hidden inside advanced research facilities or confined to established international genebanks. They were growing on farms and in communities across Peru, including Indigenous-managed land where cacao has been cultivated and maintained for generations.
Many of these trees have never been subjected to a formal modern breeding programme. Instead, they are descendants of wild or semi-wild populations that have continued growing with limited intervention.
That history gives them particular value.
A cacao tree that has survived for 50 years or more on a smallholding, potentially without intensive pesticide use or carefully controlled irrigation, has effectively undergone a long-term natural stress test.
Its ability to tolerate local pests, diseases, temperatures and rainfall patterns may contain useful information for breeders.
The study’s authors described working directly with Indigenous on-farm trees across eight highly varied departments as one of the most rewarding parts of the project.
It demonstrated that important genetic resources are not always preserved within formal scientific collections. Some are still growing in farmers’ backyards, where they remain vulnerable to land-use changes, ageing farming populations, disease and replacement by more commercially familiar cultivars.
Peru’s Importance to the Global Cocoa Sector
Peru is currently recognised as the world’s eighth-largest cocoa producer and the second-largest producer of organic cocoa.
The industry supports more than 83,000 farming families, many of whom operate smallholdings rather than large industrial plantations. This structure has helped preserve varieties that may have been lost in regions where production became more standardised.
Peru is thought to contain approximately 60 per cent of the world’s cocoa varieties. Much of this diversity is found on land that has not been exposed to extensive selective breeding or genetic modification.
That makes the country an enormous reservoir of potentially useful genetic material.
However, much of the resource remains incompletely mapped. Without systematic collection, documentation and conservation, valuable trees could disappear before their characteristics are fully understood.
The study therefore argues that Peru’s smallholder farms should play a greater role in future conservation strategies and national cacao collections. The four newly recognised lineages could help improve the genetic representation held within genebanks, ensuring that breeders can continue studying and using the material in future.
Awajun and Porcelana Offer Fine-Flavour Potential
Two of the newly identified populations could be particularly important to premium chocolate manufacturers.
The Awajun and Porcelana lineages showed ancestry patterns linked to Nacional cacao, a group long associated with aromatic beans and fine-flavoured chocolate.
This does not automatically mean every tree within the two populations will produce exceptional chocolate. Flavour is influenced by genetics, growing conditions, fermentation, drying, roasting and manufacturing methods.
Nevertheless, the genetic relationship gives breeders and chocolate makers a promising direction for further investigation.
The possibility of combining desirable flavour characteristics with improved resilience would be especially valuable. Historically, breeding programmes have sometimes faced a difficult trade-off between productivity, disease resistance and sensory quality.
A variety capable of producing reliable yields and resisting disease may not necessarily deliver the complexity required for premium chocolate. Equally, fine-flavour trees can be difficult to grow at scale or may produce smaller harvests.
The newly identified Peruvian populations could widen the options available to breeders attempting to balance these competing requirements.
Peru Builds Its Fine-Chocolate Reputation
Peru already has an established reputation within the international fine-flavour chocolate sector.
Peruvian single-origin bars and regional cacao varieties have performed strongly at global competitions. At the 2025 International Chocolate Awards World Final, the Cacaosuyo El Ganso 70 per cent bar received the overall prize.
Chocolate made using Chuncho and Piura Blanco beans has also collected awards across several competitions, helping to strengthen Peru’s profile among craft producers and premium consumers.
This commercial context makes the discovery of the new lineages particularly timely.
Fine-flavour chocolate is one of the areas of the industry where stronger margins can still be achieved. Consumers are often willing to pay more for clearly differentiated products that offer distinctive flavour, traceable origins and a credible connection to farming communities.
Should Awajun, Porcelana or the other newly identified populations demonstrate desirable sensory qualities, they could support new single-origin bars, regional collections and specialist ingredients.
They may also help Peruvian growers receive higher prices for cacao that had previously been treated as an unidentified or ordinary crop.
However, commercialisation will need to be handled carefully. Indigenous communities and farming families responsible for maintaining these trees should be recognised within any future development programme.
Questions surrounding ownership, benefit sharing and access to genetic resources will need to be addressed as commercial interest grows.
New Clues About the Parentage of CCN 51
The researchers also used their ancestry analysis to examine CCN 51, one of the most commercially important cacao varieties in Latin America.
CCN 51 is known for its high yields and resistance to certain diseases. These characteristics have made it an economic mainstay for many farmers, particularly in regions where dependable production is essential to household income.
Its sensory reputation, however, has been less favourable.
Chocolate tasting panels have often described CCN 51 as bitter, astringent and acidic, with green notes that can limit its suitability for premium bars. It is therefore more commonly associated with bulk chocolate and couverture production than with the fine-flavour market.
The new analysis indicates that CCN 51 contains a substantial proportion of Awajun ancestry, a relationship that had not been identified in earlier research.
This finding does not immediately change how CCN 51 tastes or performs, but it provides breeders with a clearer understanding of its genetic background. It may also help explain some of the cultivar’s agronomic characteristics and guide future crossing programmes.
Researchers could, for example, investigate whether particular traits associated with Awajun ancestry contributed to CCN 51’s productivity or resistance. They could then explore whether those benefits can be retained while improving flavour through carefully selected breeding partners.
A New Toolkit for Climate and Disease Resilience
The most urgent potential use of the four lineages lies in breeding for resilience.
Disease remains one of the greatest threats to cacao production. Fungal infections and other pathogens can spread through farms, reduce yields and, in severe cases, destroy entire plantations.
Climate pressure is adding another layer of difficulty. Cacao trees require relatively specific temperature, moisture and shade conditions. Rising temperatures, altered rainfall patterns and more frequent extreme weather events are making previously productive locations less predictable.
Breeders need a broad genetic toolkit to respond to these challenges.
Different populations may contain genes associated with tolerance to drought, heat, flooding or particular diseases. Without diversity, breeders have fewer options when attempting to strengthen the crop.
The four new Peruvian lineages significantly broaden the known genetic base available for study. Trees that have survived for decades under local conditions may carry combinations of traits that are absent from widely planted commercial varieties.
This does not mean that a ready-made climate-proof cacao tree has been found. Researchers will need to conduct field trials, assess productivity, evaluate flavour and study disease responses over many growing seasons.
Even so, locating the genetic material is an essential first step.
What the Discovery Means for Food Manufacturing and Production
For food manufacturers, chocolate producers and ingredient suppliers, the Peruvian discoveries could eventually support a more secure and diverse cocoa supply.
Manufacturers have recently faced rapidly rising cocoa costs, uncertainty over ingredient availability and pressure to reformulate products or adjust pack sizes. A broader range of resilient cacao varieties could help stabilise production by reducing dependence on a small number of cultivars and growing regions.
The findings could also encourage manufacturers to develop more differentiated product ranges.
If Awajun and Porcelana deliver the anticipated flavour potential, processors may gain access to new premium cocoa ingredients with distinctive regional profiles. This could support single-origin chocolate, luxury confectionery, specialist bakery products and high-value cocoa powders.
Greater genetic diversity may also improve supply-chain flexibility. Food manufacturers currently depend heavily on West African production, leaving purchasing strategies exposed to regional weather and disease problems. Supporting cacao development in Peru and other genetically diverse origins could spread risk across a wider geographical base.
However, benefits will not appear quickly.
New varieties must be selected, propagated, tested and distributed before they can influence commercial volumes.
Farmers must also be convinced that new trees will offer reliable yields and acceptable returns. Cacao trees take several years to become productive, meaning growers cannot switch varieties without financial risk.
Manufacturers, governments, researchers and development organisations may therefore need to share the cost of trials, nurseries, technical support and farmer incentives. Without coordinated investment, valuable genetic findings could remain within academic papers rather than becoming productive trees.
Conservation Must Keep Pace With Discovery
The study’s authors have made clear that identifying the lineages is only the beginning.
Peru’s genebank collections will need to be expanded and updated so that the newly documented diversity can be conserved. At present, much of the material remains scattered across smallholder farms.
On-farm conservation has genuine benefits because trees continue evolving within their natural and agricultural environments. It also carries risks. A farm may change ownership, replace old trees, switch crops or be affected by disease and extreme weather.
Formal collections provide an additional layer of protection.
Researchers can preserve representative samples, compare their performance and make material available for controlled breeding programmes. National collections can also help ensure that rare lineages are not lost before their potential is understood.
Conservation should not mean removing control from farming communities. A successful strategy will need to combine scientific preservation with continued support for the farmers and Indigenous groups who maintained these trees in the first place.
The new classifications could also help improve how regional cacao is valued. Once growers understand that their trees belong to a distinct lineage, they may be able to market their beans with greater precision and negotiate stronger prices.
Breeding Progress Will Take Years
Despite the optimism surrounding the findings, the chocolate industry should not expect an immediate solution to its supply problems.
Turning a newly identified genetic lineage into a commercially successful cacao variety is a lengthy process.
Breeders must first establish which trees carry useful characteristics. They then need to cross selected plants, grow the offspring, evaluate them under different conditions and repeat the process over multiple generations.
Resistance to one disease does not guarantee resistance to another. A tree that performs well in Peru may respond differently when planted in West Africa, Southeast Asia or another part of Latin America.
Flavour must also be assessed carefully. Promising ancestry does not guarantee that a bean will produce high-quality chocolate after fermentation and roasting.
The ultimate aim is not simply to find unusual trees. It is to develop varieties that farmers can grow profitably, processors can handle consistently and consumers will enjoy.
That will require sustained funding, long-term scientific collaboration and practical involvement from growers.
Protecting the Wider Value of Cacao
The case for protecting cacao extends beyond chocolate sales and agricultural economics.
Cacao contains flavanols and other naturally occurring compounds that have attracted significant scientific interest.
Research associated with the long-term COSMOS trial, formally known as the Cocoa Supplement and Multivitamin Outcomes Study, has linked cocoa flavanol consumption with potential cardiovascular benefits.
Findings have included a reduction in cardiovascular deaths among some trial participants, alongside wider research signals relating to blood pressure and cognitive function.
Minimally processed cacao generally retains more flavanols, magnesium, iron and fibre than heavily processed chocolate products containing high levels of sugar and fat.
The discovery of new cacao diversity therefore has a nutritional dimension as well as a commercial one. Protecting the crop helps preserve opportunities to study and use cacao’s natural compounds in food and health-related applications.
It remains important to distinguish between cacao itself and conventional confectionery. The potential benefits associated with cocoa compounds do not mean that all chocolate products should be considered healthy.
Nevertheless, every lineage that strengthens the long-term survival of cacao helps protect a crop with significant cultural, agricultural, nutritional and economic value.
The Cost of Choosing Uniformity
The cocoa industry’s current vulnerability did not arise overnight.
For decades, commercial agriculture prioritised high yields, predictable processing and uniform characteristics. Those priorities encouraged widespread dependence on a comparatively small group of dependable cultivars.
The approach delivered consistency, but it came at the cost of diversity.
A narrow genetic base leaves crops less able to respond when conditions change. What works reliably in one era may become vulnerable as new diseases emerge or established growing regions become hotter and drier.
The Peruvian findings underline the long-term value of maintaining a wider range of genetic material, including trees that may not initially appear commercially attractive.
A lower-yielding or unfamiliar tree may contain precisely the resistance trait breeders need during a future disease outbreak. A regional population may also hold flavour characteristics capable of supporting a new premium market.
Diversity should therefore be treated as a form of agricultural insurance rather than an obstacle to efficiency.
Conclusion: Existing Diversity Could Shape Cocoa’s Future
The discovery of Chuncho 1, Chuncho 2, Awajun and Porcelana has redrawn the genetic map of Peruvian cacao at a moment when the global chocolate industry urgently needs new options.
By analysing 390 trees across eight Peruvian departments, researchers from the Cocoa Research Centre and Universidad Nacional Toribio Rodríguez de Mendoza have identified material that could support disease resistance, climate tolerance and premium flavour development.
The findings also highlight the crucial contribution of Indigenous communities and smallholder farmers. These genetic resources survived not because they were locked inside laboratories, but because generations of growers continued maintaining trees that industrial agriculture had largely overlooked.
Awajun and Porcelana may offer a route towards new fine-flavour products, while all four lineages expand the toolkit available to breeders working on long-term crop resilience. The discovery of Awajun ancestry within CCN 51 also provides a valuable new clue about one of Latin America’s most widely cultivated commercial varieties.
There are no instant solutions here. Breeding, testing and distributing improved cacao trees will take years, while conservation efforts and national genebanks will require greater investment. Farmers must also receive practical and financial support if new varieties are to move from genetic studies into commercial production.
Yet the research provides something that has been in short supply across the cocoa market: a credible reason for optimism.
The raw material for a more resilient, diverse and better-flavoured chocolate industry may already be growing across Peru. It did not need to be invented. It simply needed scientists, farmers and communities to recognise its value before it was lost.
News Credits:
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