Soft White Winter Two-Gene IMI Wheat

Curiosity CL+ is a soft white winter two-gene Imidazolinone tolerant (Clearfield) wheat variety developed and released in 2013 by the Agricultural Research Center of Washington State University. It’s the first two-gene Clearfield (CL+) wheat variety released by WSU. Compared to the single-gene, the two-gene technology provides significantly better tolerance to Imidazolinone group of herbicide imazamox. Curiosity CL+ was developed using marker-assisted background selection approach. Compared to popular wheat varieties including those with Clearfield technology, Curiosity CL+ has higher yield potential, excellent snow mold resistance, and better stripe rust resistance. Curiosity CL+ is ideal for Pacific Northwest areas where ORCF102, ORCF103, Eltan, and Xerpha are currently grown.


  • Imidazolinone Tolerance is Two-gene
  • Yield Potential is Excellent
  • Test Weight is High
  • Grain Protein is Good
  • Cookie Diameter is Very Good
  • Sponge Cake Performance is Superior
  • Quality is Acceptable

Disease Resistance

Three-Year Variety Testing Data from 2017 – 2019

Variety<12″ Yield (BU/A)Test Weight (LB/BU)Protein (%)
Curiosity CL+6460.59.7
Mela CL+6460.310.0
UI Magic CL+5860.710.7
LSD (0.05)20.40.2

<12″ Precip (Bickleton, Connell, Harrington, Lind, Ritzville, and St. Andrews) 2017–2019. Data was not available for Bickleton in 2017 and 2019, and Harrington and Horse Heaven in 2019 for the analysis.


For seed inquiries please call Washington Genetics at 509-659-4020 or contact your local seed dealer.

U.S. Plant Variety Protection status for this cultivar is pending.

Signed grower agreements are required.

View WSU Variety Curiosity CL+ in pdf format (pdf).

Intended Production Area <12″ Annual Precipitation

Intended production area for this variety.