Soft White Winter Two-Gene IMI Wheat

Mela 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 second two-gene Clearfield (CL+) wheat variety released by WSU. Compared to the single-gene Clearfield™, the two-gene technology provides significantly better tolerance to Imidazolinone group of herbicide imazamox. Mela CL+ was developed using marker-assisted background selection approach. Compared to popular wheat varieties including those with Clearfield™ technology, Mela CL+ has higher yield potential, excellent snow mold resistance, and better stripe rust resistance. Mela CL+ is ideal for Pacific Northwest areas where 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

  • Stripe Rust is Moderately Resistant
  • Snow Mold is Better than Eltan
  • Winter Hardiness is Similar to Eltan
  • Cephalosporium Stripe is Equal to Eltan
  • Strawbreaker Foot Rot is Moderately Resistant

Three Year Variety Testing Data from 2017-2019

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

<12″ Precip Zone (Bickleton, Connell, Harrington, Horse Heaven, Lind, Ritzville, and St. Andrews), 2017–2019, 17 loc/years.

Data was not available for (Bickleton), 2017 and 2019, (Harrington and Horse Heaven), 2019 for the analysis.


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

Signed grower agreements are required.

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

Intended Production Area <12″ Annual Precipitation

Map of Pacific Northwest indicating where this variety is favorable.