Fifteen years is too long: Why the potato industry is rebuilding the road from genetic discovery to the grower’s field

Climate pressure, evolving diseases and rising production costs are changing faster than new potato varieties can reach commercial scale. Researchers and industry leaders are now examining how better data, closer collaboration and earlier testing could accelerate the breeding pipeline.

By Lukie Pieterse, Editor and Publisher, Potato News Today

A potato variety can be scientifically impressive and still fail commercially.

It may resist an important disease but produce unacceptable fry colour. It may tolerate heat but mature too late. It may yield well in one region yet perform inconsistently elsewhere. It may store for months but bruise too easily during harvest. It may appeal to growers while failing to meet the shape, solids, texture or appearance demanded by processors and retailers.

This is the central difficulty confronting potato breeders.

They are not searching for a single useful trait. They are trying to assemble a commercially acceptable package of traits in one genetically complex crop—and then prove that the package remains dependable across regions, seasons, storage systems and end uses.

The process can take approximately 15 years.

In a period of relatively stable production conditions, that lengthy pipeline was frustrating but manageable. Under rapidly changing climate, pest, disease, regulatory and market conditions, it is becoming a strategic vulnerability.

In July 2026, Potatoes USA reported that approximately two dozen researchers from public breeding programmes, universities and the US Department of Agriculture had met in Denver to begin shaping a national potato genomics research roadmap.

Their central question was practical: what capabilities, collaborations and investments are needed to move improved potato varieties into growers’ fields more quickly?

The meeting may prove significant because it reframes breeding as more than a laboratory or university activity. It positions variety development as long-term industry infrastructure.

The grower is being asked to manage tomorrow with yesterday’s genetics

Many of the dominant potato varieties were selected for a production environment that is changing around them.

Growers now face hotter periods, warmer nights, erratic rainfall, greater irrigation uncertainty and changing disease pressure. At the same time, they are expected to use water, fertiliser and crop-protection products more efficiently while maintaining yield, quality and contractual consistency.

A variety that requires intensive protection, precise water availability or a narrow temperature range may become increasingly expensive to grow—even if it remains technically productive.

The challenge is not merely to breed a potato that survives heat or drought. A resilient variety must continue delivering the marketable yield, specific gravity, internal quality, tuber size and storage performance required by its intended sector.

For processing potatoes, those requirements become especially demanding. A variety may have excellent field resistance and still be commercially unsuitable if its tubers accumulate excessive reducing sugars during storage and produce dark fries or chips.

The breeder therefore faces a form of biological negotiation. Disease resistance, stress tolerance, yield, maturity, dormancy, solids, appearance and culinary or processing quality must be brought together without one improvement creating an unacceptable trade-off elsewhere.

Why potato breeding takes so long

Conventional potato breeding begins with crosses between selected parents. Their offspring contain enormous genetic variation, meaning breeders must examine large populations to find the relatively few individuals that combine promising characteristics.

The selection process then moves through successive stages:

Seedlings and early-generation clones are screened.
Unpromising material is eliminated.
Surviving clones are multiplied.
Agronomic and disease responses are measured.
Trials expand across locations and seasons.
Harvest and bruise characteristics are assessed.
Storage behaviour is evaluated.
Fresh-market or processing quality is tested.
Seed stocks are increased.
Commercial partners and growers assess whether adoption is practical.

A clone that looks outstanding during an early trial may fail several years later when exposed to a different environment or storage regime. Conversely, potentially valuable material may be discarded early because the breeder did not yet possess the information needed to recognise its hidden strengths.

The greatest opportunity may therefore not be making potatoes grow faster. It may be improving the quality of decisions made at the beginning of the breeding pipeline.

Better data can eliminate weak candidates earlier

The Potatoes USA roundtable placed particular emphasis on obtaining better data earlier in variety development.

This could include genomic information, genetic markers, rapid disease screening, advanced imaging, physiological measurements and improved prediction of how a clone is likely to perform across multiple environments.

Marker-assisted selection already allows breeders to test whether young material carries genes associated with traits such as resistance to potato virus Y or certain nematodes. This means thousands of candidates can be screened without waiting for every plant to undergo full field exposure.

Genomic selection goes further. Instead of looking for only one known gene, researchers use information from across the genome to estimate the breeding value of an individual. The approach can be particularly useful for complex traits influenced by many genes.

These tools do not eliminate field trials. A genetic prediction remains a prediction until the plant demonstrates its performance in real soil, weather, disease and management conditions.

Their value lies in helping breeders decide which candidates deserve the expensive years of multiplication and multilocation testing that follow.

If weak candidates can be removed earlier—and promising ones advanced with greater confidence—the entire programme becomes more efficient.

The potato’s genetic complexity remains a formidable obstacle

Potato breeding is unusually complicated because most established commercial potatoes are tetraploid: they possess four sets of chromosomes rather than the two found in diploid organisms.

This makes inheritance difficult to predict. A parent may carry useful and undesirable traits in combinations that are hard to separate. The resulting offspring are genetically diverse and cannot simply be reproduced from botanical seed while retaining identical commercial characteristics.

Once a useful individual is identified, it is normally propagated clonally through seed tubers so that its genetic identity is maintained.

Diploid hybrid potato breeding offers a potentially transformative alternative. By working with potatoes containing two chromosome sets and developing more uniform parental lines, breeders aim to make genetic improvement more predictable.

Hybrid systems could eventually allow desirable traits to be combined more systematically and, in some situations, permit production from true potato seed rather than bulky seed tubers.

However, hybrid potato breeding is not an instant replacement for conventional systems. Researchers must still overcome challenges involving inbred-line vigour, fertility, uniformity, tuber performance, crop establishment and adaptation to commercial production.

The promise is substantial, but the gap between genetic elegance and large-scale farming must not be underestimated.

Cold storage offers a clear example of breeding’s wider value

One of the most commercially important breeding targets is resistance to cold-induced sweetening.

When potatoes are stored at low temperatures, starch can be converted into reducing sugars. During frying, these sugars contribute to darker colour and can increase the formation of acrylamide.

Processors must therefore balance two competing requirements. Lower storage temperatures can help suppress sprouting and disease development, but they may damage fry or chip colour in susceptible varieties.

A potato that maintains acceptable sugar balance at colder temperatures could provide benefits across the value chain:

Longer storage potential.
Reduced sprouting pressure.
Greater flexibility in storage-temperature management.
Lower risk of unacceptable processing colour.
Potentially reduced storage losses.
More dependable year-round raw-material supply.
Lower dependence on corrective reconditioning.

This illustrates why variety improvement cannot be valued solely by yield per acre. Genetics can influence storage costs, energy use, food waste, processing efficiency and finished-product consistency.

The return on breeding investment may therefore appear in several different budgets—not all of them on the farm.

Regional testing cannot be removed from the equation

A national research roadmap could improve coordination, but potato production remains profoundly regional.

A variety suitable for irrigated production in the Pacific Northwest may not perform similarly under rain-fed Atlantic Canadian conditions. Disease populations differ, soil types differ, harvest windows differ, and storage expectations differ.

The United States already benefits from regional cooperation. The Tri-State Potato Research and Breeding Program, involving USDA-ARS and university partners in Idaho, Oregon and Washington, has produced more than 40 varieties since its establishment.

The strength of such programmes lies not simply in crossing plants. It lies in their ability to test material across environments and involve pathologists, physiologists, agronomists, storage specialists, processors and growers.

Acceleration should not mean bypassing regional validation. It should mean eliminating unnecessary duplication, sharing comparable data and identifying failures sooner.

A variety released too quickly and adopted on inadequate evidence could impose substantial costs on seed growers, commercial producers and processors.

Breeding priorities must be decided with growers—not merely for them

Researchers require stable, long-term objectives. Growers, however, experience immediate production pressures that may not always be visible in laboratory priorities.

A useful roadmap must therefore include ongoing grower input on issues such as:

Water-use efficiency.
Heat tolerance during tuber initiation and bulking.
Resistance to late blight, early dying and emerging disease strains.
Potato virus Y and seed degeneration.
Nematode and soilborne disease resistance.
Nitrogen-use efficiency.
Bruise resistance.
Earlier or more flexible maturity.
Dormancy and sprout control.
Storage stability.
Marketable size distribution.
Processing recovery and finished-product quality.

Processors, packers and retailers must also participate, because a variety cannot succeed if it does not work throughout the supply chain.

The danger is allowing any single sector to dominate. A potato that lowers factory costs but increases production risk may struggle to gain grower acceptance. A high-yielding potato that consumers reject will not remain commercially relevant.

Breeding priorities must recognise where risk and benefit fall—and ensure that neither is disproportionately assigned to the grower.

Commercial adoption is itself part of the pipeline

Variety development does not end when researchers declare a cultivar suitable for release.

Sufficient clean seed must be produced. Agronomic recommendations must be established. Buyers must approve the product. Growers need confidence that contracts, markets and technical support will exist.

Established varieties possess enormous commercial inertia. Farmers know how to grow them, storage managers understand their behaviour, and processors have designed equipment and product specifications around them.

A new variety must therefore be more than marginally better. It needs a clear value proposition and enough institutional support to survive the difficult transition from research plot to commercial acreage.

This is one reason promising varieties can remain minor players even when their technical performance is strong.

Accelerating breeding without accelerating seed multiplication, processor evaluation and market acceptance would merely move the bottleneck further down the pipeline.

Gene editing will form part of the discussion

Modern gene-editing tools can make targeted changes to an existing variety. This could be useful where a commercially established potato performs well but carries a specific weakness, such as disease susceptibility, bruising or cold-induced sweetening.

The attraction is obvious: rather than rebuilding the entire combination of traits through repeated crossing, researchers may be able to alter a particular biological pathway while retaining much of the variety’s established identity.

But gene editing brings regulatory, intellectual-property and public-acceptance questions. Different countries classify and regulate edited crops differently, which can complicate seed movement and international trade.

The technology should neither be dismissed reflexively nor presented as a universal solution. It is one instrument in a broader breeding toolkit.

Conventional crossing, marker-assisted selection, genomic prediction, diploid breeding, gene editing and better phenotyping will probably operate alongside one another.

A roadmap must be funded beyond the political cycle

The 15-year breeding horizon creates a persistent funding problem.

Governments and industry organisations often work through short budget periods, while breeding programmes must maintain populations, expertise, facilities and trial networks across decades.

Interruptions can destroy far more than a single year of work. They can weaken institutional knowledge, break regional testing relationships and cause valuable breeding material to be lost or neglected.

If the industry regards improved genetics as essential to climate resilience and future profitability, funding must reflect that importance.

A research roadmap should consequently provide:

Long-term and predictable programme support.
Shared data standards.
Strong regional trial networks.
Investment in phenotyping and genomic tools.
Clear rules for intellectual property and data access.
Training for the next generation of potato breeders.
Earlier participation by growers, processors and seed producers.
Transparent measurement of commercial adoption and industry benefit.

The next variety must solve several problems at once

The potato industry does not lack scientific ideas. Its more serious challenge is converting those ideas into varieties that farmers can grow profitably and markets will accept.

Climate resilience cannot be added as a decorative trait. It must coexist with yield, quality, disease resistance, storability and commercial practicality.

The same is true of sustainability. A variety requiring less water or crop protection may provide enormous environmental benefit, but only if it also produces a crop that can be harvested, stored, processed and sold successfully.

Fifteen years may remain a biological reality for some forms of variety development. But avoidable delays, fragmented data and disconnected priorities should not be accepted as inevitable.

The crop’s production environment is changing too quickly.

The potato industry needs a breeding system capable of remembering what researchers have learned, sharing what regional programmes have discovered and identifying promising material before another decade has passed.

Tomorrow’s varieties will not eliminate farming risk. But the right genetics can give growers more room to manage it—and in the increasingly uncertain world ahead, that room may be among the most valuable tools the industry can provide.