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通过一系列回交,将苗期抗小麦秆锈菌(pucci(?)i(?) grami(?)is f.sp tritici)的部分显性基因由阿拉拉特小麦(Ttriticum araraticum)的2个品系(PGR 6126和PGR 6195)导入了六倍体小麦。该基因对小麦秆锈菌的绝大多数小种均有中等水平的抗性(侵染型为1~+—2)。由于它与Lr13(1.0％)、Lr23(4.7％)、Lr16(34.4％)、Sr36(21.9％)等基因及Sr9(28.0％)位点均具有连锁关系,因此该基因很可能定位于2B染色体短臂上。其基因符号被指定为Sr40。目前正在进行将该基因和与该基因紧密连锁的Lr13基因重组的工作,这种重组体在小麦育种中十分有用。在转移抗秆锈性的同时还进行了将阿拉拉特小麦的抗叶锈基因导入六倍体小麦的试验,但未获成功。
Through a series of backcrossing, the partial dominant genes of seedling stage resistant to Pucci (?)? (?)? F. Sp tritici were amplified by two of Trititicum araraticum Lines (PGR 6126 and PGR 6195) introduced hexaploid wheat. This gene has a moderate level of resistance to the majority of wheat stalk rust (infection type 1 ~ + -2). Because of its linkage with Lr13 (1.0%), Lr23 (4.7%), Lr16 (34.4%), Sr36 (21.9%) and Sr9 (28.0%), it is likely that this gene is located on chromosome 2B Short arm. Its gene symbol is designated Sr40. At present, the work of recombining the gene and the Lr13 gene tightly linked to the gene is in progress, and the recombinant is very useful in wheat breeding. In the transfer of resistance to stalk rust, we also carried out the experiment of introducing the leaf rust resistance gene of Aralate into hexaploid wheat, but the result was unsuccessful.