关键词: 基因转移, 易位系, 条锈病, 抗性, 小麦育种

Abstract: By using the new approach to produce wheat rye translocation, a series of wheat lines, 98-1054-5, 98-1054-17, 98-1054-15-1and 98-1054-15-2, were developed from a high yield wheat cultivar, Mianyang 11, and a inbred line of "Baili" rye. All these wheat rye translocation lines exhibit high resistance to yellow rust and middle resistance to powdery mildew. It is found all these lines are the translocation lines involved the 6B and 6R chromosomes. The gene resistant to yellow rust originates from the 6R chromosome of Baili rye and it is different from Yr9 and other genes for resistance to yellow rust. This new gene was temporarily named YrBL. The chromosome site for translocation between 6R and 6B exhibits difference in these lines related to the awn gene on 6B. The translocation lines between chromosome 6R and 6B exhibits a number of useful agronomic characters such as high yield, disease resistance, wide adaptation, more erect and thick leaves, etc. In this paper how these translocation lines are applied in the practical wheat breeding programme is discussed.

Key words: GENE TRANSFER, RESISTANCE TO YELLOW RUST, WHEAT-RYE TRANSLOCATION, WHEAT BREEDING