黑麦抗条锈病基因对小麦高产品种绵阳11的直接转移

使用小麦高产品种绵阳 11的套袋自交纯系为受体 ,白粒黑麦自交系为供体 ,选育了高抗条锈病和中抗白粉病的小麦新品系 98- 10 5 4系列。研究证明它们的抗性来源于小麦 6B染色体和黑麦 6R染色体的易位 ,含有与Yr9和绵阳 11的抗条锈病基因不同的新基因 ,暂时命名为YrBL。同时指出所得的 6R易位系是研究易位效应和基因表达的优良材料 ,在小麦育种中有重要应用价值

Transfer of a Gene Resistant to Puccinia Striiformis West.F.sp.Tritici from a Rye Inbred Line into High-yield Wheat Cultivar Mianyang 11

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.