Summit 515 is a hard red spring wheat. It was developed by Syngenta Cereals (formerly Resource Seeds, Inc.) and released in 2011. Stripe rust resistance genes Yr5 and Yr15 were introduced by four backcross generations into the susceptible cultivar Summit and then combined using marker assisted selection at UC Davis (project supported by Research Seeds Inc.). Research Seed Inc. selected the best lines among BC4F2 lines homozygous for the two genes. This cultivar is very similar to the original Summit but is resistant to prevalent races of the stripe rust pathogen present in California. It has medium early maturity and good straw strength. It is resistant to stripe rust and leaf rust, moderately susceptible to BYD, and susceptible to Septoria tritici leaf blotch and powdery mildew. It was evaluated as Entry 1658 in the UC Regional Cereal Testing program from 2010-present for late fall planting in the Central Valley, surrounding areas, the south-central coast region, and southern desert areas of California.

Patwin 515 is a hard white spring wheat. It was developed by the University of California, Davis. Foundation seed was produced in 2011/2012, with release planned for 2013. Stripe rust resistance genes Yr5 and Yr15 were introduced by five backcross generations into the UC Davis resistant cultivar Patwin (from the cross Madsen/2*Express) and then combined using marker assisted selection at UC Davis. This cultivar also has the Aegilops ventricosa 2NS translocation carrying resistance genes to stripe rust Yr17, leaf rust Lr37, stem rust Sr38, and root knot nematodes. Patwin 515 has very high yield potential in both the Sacramento and San Joaquin Valleys as well as excellent breadmaking quality (has one of the highest protein contents among current cultivars). It is very similar to the original Patwin, with medium-late maturity and excellent straw strength, but has additional sources of stripe rust resistance. It is resistant to stripe rust and leaf rust, moderately resistant to Septoria tritici leaf blotch and BYD, and moderately susceptible to powdery mildew. It was evaluated as Entry 1680 in the UC Regional Cereal Testing program from 2011-present for late fall planting in the Central Valley, surrounding areas, the south-central coast region, and southern desert areas of California and in the Oregon Spring Wheat Elite Yield Trial conducted in cooperation with the UC Regional Cereal Testing program from 2011-present for spring planting in the intermountain region of northern California.

Sonora, a soft white landrace wheat, has a history here in the Southwestern United States, because it is a variety grown early by the agricultural Native Americans in Mexico. They used it to make their whole wheat tortillas, and apparently liked the way it could be ground to a whole wheat flour on their metate. Sonora wheat might be the very first wheat successfully introduced onto the American continent soon after Columbus’s famous journey of discovery in 1492. It was grown in the Southwest continuously until about 1960.

Edison is a hard white spring wheat developed by retired English teacher and backyard breeder Merrill Lewis of Bellingham, Washington. Merrill gave his seed to Dr. Steve Jones at WSU Bread Lab for his team to include in their wheat trials. T

Patwin-515HP is a Hard White Spring hexaploid wheat variety developed by the University of California wheat breeding program and tested in Regional Yield trials as experimental line UC1743.