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    • Keywords


      wheat stripe rust; resistance gene; simple sequence repeat; YrSD.

    • Abstract


      Strubes Dickkopf is the sixth differential in the world set for wheat stripe (yellow) rust. It is very important to clarify its genetic character of resistance to stripe rust and to develop the molecular markers linked to resistance genes. The NIL Taichung 29*6/Strubes Dickkopf, which was obtained by Strubes Dickkopf as the gene donor and Taichung 29 as the genetic background through backcross breeding, was crossed with the recurrent parent Taichung 29, inbred, and backcrossed to obtain the F1, F2 and BC1 population. The genetic analysis of the cross Taichung 29/(Taichung 29*6/Strubes Dickkopf) was assessed by inoculating the rust race CYR26 at seedling stage. Bulked segregant analysis (BSA) and F2 segregation analysis were used for detecting polymorphic primers to locate the gene. The resistance of the NIL Taichung 29*6/Strubes Dickkopf to CYR26 was controlled by a single dominant gene, named YrSD. The primer pair Xbarc59 on 5B was linked to YrSD and the genetic distance between Xbarc59 and YrSD was 2.4 cM. The molecular marker Xbarc59 closely linked to the gene YrSD could be used in marker-assisted selection for resistance to stripe rust in wheat breeding programmes.

    • Author Affiliations


      Feng Jing1 Xu Jiao-Jiao1 2 Lin Rin-Ming1 He Yue-Qiu2 Xu Shi-Chang1

      1. State Key Laboratory for Biology of Plant Disease and Insect of Plant Protection, Institute of Plant Protection, Chinese Academy of Agriculture Science, No 2, West Yuan Ming Yuan Road, Beijing 100193, People’s Republic of China
      2. Yunnan Agricultural University, Kunming 650201, Yunnan Province, People’s Republic of China
    • Dates

  • Journal of Genetics | News

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      Posted on July 25, 2019

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