小麦远缘杂交对其物种进化具有极其重要的作用和意义。十九世纪初期,有性杂交技术用于育种实践后,人类逐渐认识并掌握了远缘杂交这个创造新种或新类型的有利武器。国外育种实践证明,天兰冰草(Agropyron glaucum)是小麦属间远缘杂交重要亲本之一。根据我省小麦育种目标和任务,为了把天兰冰草某些优良性状通过人工有性杂交导入到普通小麦中去,刨造小麦新类型和新品种,我院从1957年起开展了春小麦与天兰冰草远缘杂交育种的研究。开始,我们以普通小麦不同品种为母本,以天兰冰草为父 Wheat distant hybridization has an extremely important role and significance for the evolution of its species. In the early nineteenth century, when sexual hybridization was used for breeding practice, humans gradually came to understand and grasp the advantages of distant hybridization as a new weapon for creating new species or new types. Breeding practice abroad proved that Agropyron glaucum is one of the important parents for interspecific distant hybridization. In accordance with the objectives and tasks of wheat breeding in our province, in order to introduce some fine traits of Betula platyphylla into common wheat through artificial sexual crossbreeding and to create new wheat types and new varieties, Study on the distant hybridization and breeding of Betula platyphylla in Tianlan. At the beginning, we use different varieties of common wheat as the female parent and Tianlan Agar as our father