远缘杂交是指亲缘关系很远,如不同亚种、种、属个体间的杂交;生态类型差异很大的个体之间的杂交;地理远距离的杂交等。我国粮食作物远缘杂交的成果,具有杂交范围广和有独创性两个特点,在广度和紧密结合农业生产实践方面居于世界领先地位。我国远缘杂交涉及的作物非常广泛,不仅有种间杂交,属间 Distant hybridization refers to the genetic relationship is far, such as different subspecies, species, is a hybrid between individuals; Ecotypes of individuals with very different species of hybrids; Geographic distance hybridization. The results of distant hybridization of China’s grain crops have the characteristics of a wide range of hybridization and originality, leading the world in terms of breadth and close integration with agricultural production practices. The crops involved in distant hybridization in our country are very extensive, not only in interspecific hybridization but also in between