Twin Wheat

  • Soft white spring wheat.
  • Semi-dwarf
  • Moderately stiff straw
  • Medium maturity
  • Awnless (beardless)


Twin is a soft white spring wheat. It was developed cooperatively by the Idaho AES and the USDA-ARS and released by the Idaho, Oregon, and Washington AESs and USDA-ARS in 1971. It was selected from the cross Lemhi 53 *3//Norin 10/Brevor/3/Lemhi 62/4/Chinese Spring/Aegilops umbellulata//7*Lee/3/5*Lemhi. Its experimental designation was IDO015. Twin is a sister selection of Springfield. It is a semi-dwarf with moderately stiff straw and medium maturity. Spikes are erect to inclined, awnless (rarely apically awnletted, awnlets 2-6 mm long), oblong to clavate, dense (lower 1⁄2 of head is mid-dense). Glumes are glabrous, white, long and wide; shoulders are mid-wide, oblique to rounded and beaks are mid-wide, obtuse and 0.5 mm long. Kernels are white, short, soft, oval to ovate with a mid-wide, deep crease. Cheeks are rounded and the brush is mid-sized and mid-long. Pastry quality is satisfactory and similar to that of Lemhi 66 and Springfield. At the time of release it was resistant to stripe rust and stem rust, moderately susceptible to BYD, and susceptible to leaf rust and powdery mildew. It subsequently became susceptible to stripe rust and Septoria tritici leaf blotch. It was evaluated as Entry 175 in the UC Regional Cereal Testing program from 1980-91 and from 1996-2004 for spring planting in the intermountain region of northern California. Crop Science 12: 259 (1972)


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