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Crop Wild Relatives Project

An 11-year project to ensure long-term crop conservation and facilitate their use in breeding new, improved crops.

Collecting In Numbers


countries worldwide


collecting partnerships with institutions


seed samples collected and conserved

Pre-breeding and Evaluation In Numbers




pre-breeding lines conserved in genebanks


Commercial CWR-derived varieties released

A decade of wild diversity

In 2011, the“Adapting Agriculture to Climate Change: Collecting, Protecting and Preparing Crop Wild Relatives”project – the CWR project, for short – set out to identify which crop wild relatives needed the most urgent attention and to see that they got it. And it has succeeded spectacularly in this.

More about the project

Project Components

Gap Analysis

The first phase of the Project focused on the development of a global CWR inventory, an occurrence dataset, and gap analyses detailing where CWR species have not been collected before. This initial research step helped to identify and prioritize which CWR to collect and where, based on a global dataset of past collections, expert evaluations, and information on ease of use in breeding for each species.

Gap Analysis: Read more

Collecting and conservation

National partners organized collecting of priority CWR in their country. Prior to collecting, permits had to be obtained, and localities of populations identified. Once found, collectors often needed to visit a site multiple times. 

Once crop wild relatives have been collected, conserving them properly in ex situ collections is essential to ensure their continued availability. Samples of the crop wild relatives collected through this project have been deposited in the national collections of the country of origin, the Millennium Seed Bank, the appropriate CGIAR international collection, and the Svalbard Global Seed Vault whenever possible. 

Collecting and conservation: Read more

Pre-breeding and evaluation

The first step is using CWR in crop improvement is pre-breeding, an essential component of the Project consisting of a wide range of activities that aim to isolate desired genetic traits (e.g., disease resistance) and introduce them into breeding lines that are more readily crossable with modern, elite varieties. The Project supported the work of 62 national and international partners in 34 countries working on pre-breeding and evaluation of 19 key crops.

Pre-breeding and evaluation: Read more

Sharing data and diversity

Collecting and conserving seed samples of vulnerable crop wild relatives and using them to produce pre-bred lines—a kind of bridge between the weedy wild relatives and the sort of domesticated crops farmers grow—are essential steps in using crop wild relatives to adapt agriculture to climate change. But equally important is making sure that the people who can use them in this effort—researchers, plant breeders and farmers, for example—know about them and their characteristics and can get their hands on them. The Project made data on the newly collected materials available through the Genesys platform and worked with the James Hutton Institute, UK, to make data on the pre-bred materials of 15 of the 19 crops accessible through the Germinate portal.

Sharing data and diversity: Read more

Capacity building

“Our partners are at the front lines of climate change adaptation and mitigation,” states Benjamin Kilian, coordinator of the Crop Wild Relatives (CWR) project. “From the very beginning, the project had a strong emphasis on capacity building, to ensure that our partners had the knowledge, skills and resources they needed to do their jobs to the best of their abilities.”

Capacity building: Read more

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