Perennial Oilseeds

In 2001, David Van Tassel began collecting wild silphium seed. By 2003, he had integrated silphium integrifolium into his research with several other perennial oilseeds. Silphium’s surprisingly good performance during drought in 2013 drove a shift in focus to this deep rooted species.

Below are the short and long term goals for perennial oilseeds, bred by an international network of breeders in different climates, latitudes, and soil types around the world.

• Long-term, the goal is for perennial silphium to partially replace annual oilseed crops such as sunflower, canola and soy.  It may also become commercially viable in drought-prone environments that lack access to irrigation water, and in regions outside the range of native silphium pests and diseases (for instance, in parts of Argentina). We anticipate that silphium, by 2025, may be able to achieve yields high enough for commercial production (particularly in the gourmet or environmentally labelled markets of edible vegetable oil). Our long-term vision, the displacement of oilseed sunflower and canola in North America, may require another decade or two of intensive plant breeding.
• Our near-term goal is to learn how to harvest efficiently and keep plants healthy through improved plant nutrition and pest control. This includes breeding for rust-resistance, improving understanding of insect pests, collecting new wild germplasm, and making hybrids between silphium species and ecotypes. Day-to-day activities include:
  • Advancing our silphium populations through the breeding cycle. Every cycle is a big chance to bring together genes we need and to break up associations between useful genes and unhelpful ones.
  • Identifying key indicators on how this species responds to new situations. New experiments are usually needed to confirm such observations.
  • Identifying how to germinate seeds more quickly. Doing so will speed up future research.
  • Continue working with a growing group of collaborators. We supply collaborators with seeds and data so that the work can continue in multiple states and countries, and so that young scientists have a chance to become passionate about domestication and plant breeding.

Global

Makaneyyat Project Ramallah, Palestine
Museo Paleontológico Egidio Feruglio (MEF) Trelew, Argentina
Universidad de la Republica Montevideo, Uruguay
University of Bonn, Germany

Domestic

Kansas State University, Manhattan, Kansas
Northwest Research and Extension Colby, Kansas
Red River Valley Agricultural Research Center, USDA-ARS Fargo, north Dakota
Saint Louis University and Missouri Botanical Garden St. Louis, Missouri
University of Colorado, Boulder, Colorado
University of Manitoba, Canada
University of Minnesota, St. Paul, Minnesota
University of Vermont, Burlington, Vermonnt
University of Wisconsin, Madison, Wisconsin
USDA Soil Erosion Lab Fayetteville, Arkansas