• Loading metrics

Freeing Crop Genetics through the Open Source Seed Initiative

  • Claire H. Luby ,

    Affiliation Department of Horticulture, University of Wisconsin-Madison, Madison, Wisconsin, United States of America

  • Irwin L. Goldman

    Affiliation Department of Horticulture, University of Wisconsin-Madison, Madison, Wisconsin, United States of America

Freeing Crop Genetics through the Open Source Seed Initiative

  • Claire H. Luby, 
  • Irwin L. Goldman


For millennia, seeds have been freely available to use for farming and plant breeding without restriction. Within the past century, however, intellectual property rights (IPRs) have threatened this tradition. In response, a movement has emerged to counter the trend toward increasing consolidation of control and ownership of plant germplasm. One effort, the Open Source Seed Initiative (OSSI,, aims to ensure access to crop genetic resources by embracing an open source mechanism that fosters exchange and innovation among farmers, plant breeders, and seed companies. Plant breeders across many sectors have taken the OSSI Pledge to create a protected commons of plant germplasm for future generations.


Historically, the results of scientific research have been made public to enable others to build on the results of discovery and understanding. Likewise, crop plants, long considered the common heritage of humankind, have been available for farmers and plant scientists to use in crop improvement [1]. Over the last hundred years, increasing restrictions on plant germplasm through intellectual property rights (IPR) have eroded the view of plants as a public good. In the United States, IPR restrictions may include utility patents, contracts, material transfer agreements (MTAs), trade secrets, and “bag tag” licenses (Table 1).

Table 1. Germplasm IPRs and their effects on plant breeding.

For more detail on IPR protections (excluding Open Source), see [2].

IPRs were developed to foster innovation by protecting the rights of the inventor to claim ownership over their invention, given that the process was made public. While IPRs can be used to incentivize research and development [3], proprietary restrictions on crop plants by fewer entities consolidates the control of germplasm. This threatens the exchange of crop genetic resources necessary for innovation in plant breeding, such as developing novel cultivars to feed a growing population, perform under low-input conditions, and adapt to climate change. IPRs have also limited farmers’ and gardeners’ ability to save seeds, constrained plant breeders’ ability to use a diverse array of germplasm, and complicated the exchange of plant genetic resources around the world. At the same time, IPRs have benefited those who control crop genetic resources, which include both seed companies and universities.

Besides promoting innovation, IPRs were seen as a mechanism to disseminate knowledge. However, some have questioned whether the current IPR regime encourages the exchange of information and innovation [4]. While plants are not knowledge per se, the interaction of humans and agricultural plants functions somewhat like a knowledge-based system. Plant breeders continue to select for improved traits and to build on the work of farmers and plant breeders that has occurred since the dawn of agriculture some 10,000 years ago. In this way, restricting access to plant germplasm prevents others from continuing to use that accumulated “knowledge” to select improved genotypes. For example, many new lettuce cultivars are being patented. This includes patents on cultivars, such as “Multigreen 57” lettuce [5], that prevent others from using that cultivar for any purpose without first obtaining a license from the patent holder (Fig 1). This is in contrast to a cultivar or line, such as “SM13-R2,” released into the public domain by the US Department of Agriculture lettuce breeding program in California [6]. While USDA lines are freely available to use, the resulting hybrid from a cross with this line could be proprietary. In contrast, cultivars released under the Open Source Seed Initiative (OSSI) Pledge, such as the open-pollinated “Chartreuse Butter Tongue” cultivar developed by Frank Morton, can be used freely for any purpose on the condition that all derivatives and seed retain the same freedoms (Fig 1). While many broad-based utility patents are still pending, plant breeders who have developed cultivars with similar traits may be unable to use them for 20 years if the utility patents are ultimately granted. Additionally, “bag tag” licenses attached to seed packets and certain restrictive contracts required for seed purchases contain provisions that prevent the saving and reuse of seed, essentially creating a “one-time rental” agreement for use of seed [7]. Contracts may also inhibit use of seed for research purposes in the public sector if, for example, the details of the contract restrict publication of data.

Fig 1. Lettuce cultivars released using three different mechanisms.

Plant cultivars released into the public domain are often utilized in developing subsequent cultivars [8] that are then protected using various forms of intellectual property rights (IPR). The following lettuce cultivars are released using a variety of IPRs that allow subsequent users to utilize cultivars in future breeding in different ways. Photo credits: Multigreen 57, Osbourne Seed Company; Chartreuse Butter Tongue, Karen Morton; SM13-R2, Jose Orozco, USDA/ARS.

The Open Source Seed Initiative

Concerns over the difficulties of accessing genetic resources in the face of increasing use of restrictive IPRs led a group of plant breeders, farmers, nonprofit agencies, seed advocates, and policymakers to create the nonprofit organization: the Open Source Seed Initiative (OSSI). Following open source principles, OSSI seeks to maintain fair and open access to plant genetic resources worldwide to foster innovative plant breeding, develop productive and resilient cultivars, and provide an alternative to other forms of IPR.

Critical to supporting these goals is the use of an open source mechanism for creation of a protected commons [9] for crop plant germplasm that fosters exchange and innovation among farmers, plant breeders, seed companies, and consumers in a viral fashion without restrictions on further breeding. The idea of a protected commons was coined by Richard Jefferson of CAMBIA in an effort to integrate biotechnology and biological research with “copyleft” licensing arrangements that “support both freedom to operate, and freedom to cooperate” in a “protected commons” [10]. A protected commons allows for public access and improvement of a resource without imposing restrictions on downstream use. OSSI created a pledge that embraces this approach. Users that accept the OSSI Pledge agree that no further restrictions can be made. OSSI promotes farmers’ and gardeners’ rights to save and replant seed of crops grown on their land and open access to plant germplasm for breeding. While both of these values are also shared by the Union for the Protection of New Varieties of Plants (UPOV) and the US Plant Variety Protection Act (PVPA) (Table 1), what distinguishes OSSI from either UPOV or PVPA is that no restrictions can be placed on derivative use of seeds distributed under the OSSI Pledge. Thus, OSSI-Pledged seeds can be bred, sold, shared, and reproduced as long as any subsequent derivative or reproduction of that seed also carries the same freedoms.

OSSI initially developed a legal license similar to the “copyleft” licenses of the free and open-source software movements [7] to accomplish the task of developing a protected commons for plant germplasm. However, after consultation with many plant breeders and seed companies, the eight-page license proved too cumbersome for practical use. Consequently, the OSSI Pledge was developed as a social mechanism rather than a legal license to create a protected germplasm commons and encourage unfettered exchange of seed now and into the future [11]. The OSSI Pledge reads:

“You have the freedom to use these OSSI-Pledged seeds in any way you choose. In return, you pledge not to restrict others’ use of these seeds or their derivatives by patents or other means, and to include this pledge with any transfer of these seeds or their derivatives.”

OSSI is primarily an education and outreach organization, serving as a collection point for open-source plant cultivars and developing a community of users and contributors. Plant breeders who have bred novel cultivars and who would like to release them as OSSI-Pledged are able to submit that information to the OSSI database, where they are reviewed by a subcommittee of OSSI board members. After they are accepted, OSSI then lists OSSI-Pledged cultivars and the seed companies that sell them on its website. Plant breeders situated in a wide variety of locations—from universities to freelancers to farmer-breeders to seed companies—have found that the OSSI Pledge and social support of the OSSI community provides the type of release mechanism that ensures sharing of cultivars as well as recognition of their plant breeding efforts. OSSI is not a seed company, but partners with seed companies who are selling OSSI-Pledged cultivars. Seed companies see an advantage to participating in the community because OSSI creates business for their companies by directing those interested in purchasing open-source seed to their websites. OSSI now has over 250 cultivars, contributed by over 28 plant breeders and sold by over 33 different companies.

Open systems are characterized by peer-based production that uses social mechanisms to achieve cooperation. Inherently, there is participation from a diverse set of actors with wide-ranging motivations and from various institutional contexts [12]. Additionally, instead of controlling users entirely through direct payment incentives, open systems rely on non-market-based incentives, both extrinsic (such as enhancing reputation and developing social networks) and intrinsic (such as creating a sense of social belonging) [13]. OSSI is creating a system for open exchange of plant germplasm by (1) encouraging dissemination of OSSI-Pledged cultivars and all derivatives of OSSI-Pledged cultivars, thus creating a protected commons of plant germplasm; (2) maintaining access to plant germplasm and the ability to share that germplasm freely with others; (3) fostering a decentralized and innovative plant breeding system; and (4) crediting the source and providing equitable benefit sharing so that plant breeders and stewards of plant germplasm receive recognition and potentially monetary rewards for their efforts.

The OSSI database and website provide recognition to plant breeders and credits them for the effort that they have put into creating improved cultivars. As funding for public plant breeding has declined, new sources of revenue to support plant breeding programs are needed. OSSI is interested in ensuring equitable benefit sharing and creating novel mechanisms for funding plant breeding activities. For example, a plant breeder who releases a cultivar under the OSSI Pledge can make royalty-like arrangements with a seed company interested in selling the seed of that cultivar commercially, as long as the arrangement is binding only to the two contracting parties and does not limit further use of that seed. OSSI does not seek to control those arrangements between a breeder and a seed seller as long as they do not restrict the ultimate recipient of the seed in any way. In addition, OSSI is working on several innovative partnerships between food stores, seed companies, farmers, and plant breeders to develop mechanisms to support plant breeding by generating awareness of open-source genetics at the consumer level.

Creating an open-source system for plant germplasm has the potential for many positive effects. The genetic diversity contained within seeds is essential for healthy farming systems and food security. Humans have been selecting for desirable traits and adapting plants to different environments using plant breeding techniques since the beginning of agriculture. Plant breeding, whether by farmers or breeders, can select genetics that most complement sustainable systems. Farmers and breeders must have access to diverse plant genetic resources in order to ensure that plants adapt to new pests and changing environmental conditions. Through utilization of an open-source pledge, OSSI is creating an ethical sharing and distribution mechanism for plant breeding. The enthusiasm by plant breeders, seed companies, farmers, and gardeners demonstrates support for the type of ethical value chain and sharing economy that OSSI embodies. The creation of a community that includes all players in the seed system has been critical to the success of this initiative.


  1. 1. Kloppenburg J. First the seed: The political economy of plant biotechnology, 1492–2000. Reissued with a new preface and an additional final chapter, ‘Still the Seed’. 2004. University of Wisconsin Press, Madison, WI.
  2. 2. Jondle RJ, Hill KK, Sanny T. Current legal issues in intellectual property rights and protection for crop plants. Crop Science. 2015; 55.
  3. 3. Lence SH, Dermot JH, Alston JM, Smith JSC. Intellectual property in plant breeding: comparing different levels and forms of protection. European Review of Agricultural Economics. 2015; 42: 1–29.
  4. 4. Henry C, Stiglitz JE. Intellectual Property, Dissemination of Innovation and Sustainable Development. Global Policy. 2010; 1: 237–251.
  5. 5. Van Zee J. Lettuce variety multigreen 57 LTL. U.S. Patent 9198395 B2, 2015: 1 December.
  6. 6. Simko I, Hayes RJ, Bull CT, Mou B, Luo Y, Trent MA, Atallah AJ, Ryder EJ, Sideman RG. Characterization and performance of 16 new inbred lines of lettuce. HortScience. 2014; 49: 679–687.
  7. 7. Kloppenburg J. Re-purposing the master’s tools. In: Food sovereignty: A critical dialogue, International Conference, Yale Univ., New Haven, CT. 14–15 Sept. 2013.
  8. 8. Mikel MA. Genealogy of contemporary North American Lettuce. HortScience. 2007; 42: 489–493.
  9. 9. Jefferson, R. Science as a social enterprise: The CAMBIA BiOS initiative. Innovations. 2006. Fall: 11–42.
  10. 10. CAMBIA. BiOS: a Framework to Collaboratively Solve Our Shared Challenges. 2009.
  11. 11. Luby CH, Kloppenburg J, Michaels T, Goldman IL. Enhancing freedom to operate for plant breeders and farmers through open source plant breeding. Crop Sci. 2015; 55: 2581–2488.
  12. 12. Chan L, Okune A, Sambuli N. What is open and collaborative science and what roles could it play in development? In: Open Science, Open Issues. In: Albagli S, Maciel ML, Abdo AH, editors; 2015. pp. 87–112.
  13. 13. Benkler Y. 2004. Commons-based strategies and the problems of patents. Science. 2004; 305: 1110–1111. pmid:15326340