The Land Institute’s perennial wheat program creates hybrids made from crossing annual wheat species with wheatgrass species.
Through hybridization of winter durum wheat with intermediate wheatgrass, we have developed a new type of perennial wheat which could live for years in the field. Five stable lines were obtained in 2018 and seeds are being propagated for further evaluation across the world.
Why Perennial Wheat?
• Elite lines of perennial wheat currently yield grain about 50-70% that of annual wheat cultivars and we continue to make improvements.
• Some of our perennial wheat plants in Kansas have lived for nine years or more, six years in other locations.
• Twenty of the most promising crosses have been grown in nine different countries to see how particular genetic types vary in performance when grown.
The Land Institute established the perennial wheat program in 2001 with the goal of developing perennial wheat that is economically viable for farmers and replaces the global food calories of annual wheat.
In 2009, we developed our first perennial wheat line through the hybridization of bread wheat with intermediate wheatgrass and in 2010, 843 perennial hybrid plants survived the hot summer and cold winter for the first time in our field.
Many successful hybrids have been achieved between wheat and wheatgrass. They are being used to understand the genetic contribution of the annual and perennial parents. Other research partners around the world have made similar crosses between annual and perennial wheat.
In 2018, we developed five stable lines of a new type of perennial wheat which could live for years in the field. Seeds are now being propagated for worldwide evaluation. Twenty of the most promising crosses are being grown in nine different countries to see how particular genetic types vary in performance when grown under a broad range of environmental conditions.
Below are the current long-term and near-future goals of the Land Institute and our collaborators for the perennial wheat breeding program.
- Near-term, the goal is to improve perennial lines. More genetic studies on flowering time genes will provide a better understanding of which genes control perenniality. Perenniality (the ability of the plant to regrow after grain harvest and to survive harsh winters and/or summers) is also highly variable depending on environmental conditions.
- Increase grain yield through continued breeding efforts.We are partnering with researchers worldwide to develop perennial wheat. Read more about our research partners here.
- Long-term, the goal is to develop an economically viable perennial wheat variety in the next 10-20 years. Our breeding program continues to seek improvement on a number of plant traits including perenniality and yield. Although we see steady improvement every year, we expect it could take another 10-20 years to develop an economically viable perennial wheat variety.
Kansas State University, Manhattan, Kansas
Oklahoma State University Stillwater, Oklahoma
CIMMYT Turkey Wheat Program, Yenimahalle/Ankara, Turkey
Council for Research and Experimentation in Agriculture Rome, Italy
New South Wales Department of Primary Industries, Australia
Northwest A & F University, Yangling, China
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