六十年代末期,美国便开始了杂交小麦研究。主要是研究美国中部及南部大平原的硬粒红皮冬小麦及中西部的软粒红皮冬小麦,以及北方大平原硬粒红皮春小麦。利用细胞质雄性不育系和化学杀雄体系来选育杂交小麦组合为主。目前有三个公司大规模生 In the late 1960s, the United States started the study of hybrid wheat. Mainly in the United States and the southern central plains of hard-skinned red-skinned winter wheat and soft-red winter wheat in the Midwest, and northern Great Plains erythrospea spring wheat. The cytoplasmic male sterile line and chemical kill male line were used to breed hybrid wheat combinations. There are currently three companies on a large scale