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Home > Archive>Volume 25, Issue 10, 2024 >1726-1736. DOI:10.13430/j.cnki.jpgr.20240110001
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Genetic Diversity Analysis and Identification of Stripe Rust Resistance to CYR34 in Einkorn Wheat
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Affiliation:

1.Institute of Plant Protection， Chinese Academy of Agricultural Sciences/State Key Laboratory for Biology of Plant Diseases and Insect Pests， Beijing 100193;2.National Agricultural Experimental Station for Plant Protection at Gangu， Ministry of Agriculture and Rural Affairs， Gangu 741200， Gansu

Fund Project:

Foundation projects： National Key R&D Program of China （2021YFD1401000）； Agricultural Science and Technology Innovation Program of Chinese Academy of Agricultural Sciences

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    Abstract:

    Einkorn wheat （AA）， as the basic species of wheat， has lost some loci of the A chromosome during the evolution of bread wheat. Evaluating the genetic diversity and disease resistance level of einkorn wheat has important theoretical significance and breeding value for common wheat breeding and genetic improvement. In our study， 15 pairs of SSR primers with clear bands and high polymorphism were used to analyze the genetic diversity of 170 einkorn wheat materials， and the current epidemic stripe rust physiological race CYR34 was used for disease resistance evaluation. The results showed that 71 alleles were obtained by SSR analysis， and the average polymorphism information content of primers was 0.6540. Cluster analysis and population structure analysis showed that tested materials were divided into two groups， and the average genetic distance within the two groups was 0.4732 and 0.5404， respectively. Through evaluation of disease resistance， 19 materials with better resistance were obtained， including 3 immunity， 2 near immunity， 1 high resistance and 13 medium resistance materials， accounting for 11.17% of the tested materials. Three pairs of primers had a correlation with the resistance of einkorn wheat to stripe rust. In summary， einkorn wheat contains abundant allelic variations and stripe rust resistance genes， which has the breeding potential to improve wheat resistance to stripe rust.

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  • Received:January 10,2024
  • Online: October 09,2024
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